Home / 10,500,000.80-15,750,001.20-9,782,555.45

Finding the Fourth Proportional to 10,500,000.80, 15,750,001.20 and 9,782,555.45

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Solution

The fourth proportional to 10,500,000.80, 15,750,001.20 and 9,782,555.45 is: 14,673,833.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500,000.80 : 15,750,001.20 = 9,782,555.45 : x
  2. Step 2: Convert to fraction form
    10,500,000.80/15,750,001.20 = 9,782,555.45/x
  3. Step 3: Cross multiply
    10,500,000.80x = 15,750,001.20 × 9,782,555.45
  4. Step 4: Simplify right side
    10,500,000.80x = 154,075,260,076,566.53
  5. Step 5: Solve for x
    x = 154,075,260,076,566.53/10,500,000.80
  6. Step 6: Final answer
    x = 14,673,833.18

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.