Home / 14,001.20-21,003.60-6,984.80

Finding the Fourth Proportional to 14,001.20, 21,003.60 and 6,984.80

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Solution

The fourth proportional to 14,001.20, 21,003.60 and 6,984.80 is: 10,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.20 : 21,003.60 = 6,984.80 : x
  2. Step 2: Convert to fraction form
    14,001.20/21,003.60 = 6,984.80/x
  3. Step 3: Cross multiply
    14,001.20x = 21,003.60 × 6,984.80
  4. Step 4: Simplify right side
    14,001.20x = 146,705,945.28
  5. Step 5: Solve for x
    x = 146,705,945.28/14,001.20
  6. Step 6: Final answer
    x = 10,478.10

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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.