Home / 10,001.20-15,001.80-3,075.70

Finding the Fourth Proportional to 10,001.20, 15,001.80 and 3,075.70

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Solution

The fourth proportional to 10,001.20, 15,001.80 and 3,075.70 is: 4,613.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.20 : 15,001.80 = 3,075.70 : x
  2. Step 2: Convert to fraction form
    10,001.20/15,001.80 = 3,075.70/x
  3. Step 3: Cross multiply
    10,001.20x = 15,001.80 × 3,075.70
  4. Step 4: Simplify right side
    10,001.20x = 46,141,036.26
  5. Step 5: Solve for x
    x = 46,141,036.26/10,001.20
  6. Step 6: Final answer
    x = 4,613.55

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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.