Home / 10,285.80-15,404.40-6,349.20

Finding the Fourth Proportional to 10,285.80, 15,404.40 and 6,349.20

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Solution

The fourth proportional to 10,285.80, 15,404.40 and 6,349.20 is: 9,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.80 : 15,404.40 = 6,349.20 : x
  2. Step 2: Convert to fraction form
    10,285.80/15,404.40 = 6,349.20/x
  3. Step 3: Cross multiply
    10,285.80x = 15,404.40 × 6,349.20
  4. Step 4: Simplify right side
    10,285.80x = 97,805,616.48
  5. Step 5: Solve for x
    x = 97,805,616.48/10,285.80
  6. Step 6: Final answer
    x = 9,508.80

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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.