Home / 9,921.12-14,875.92-5,301.60

Finding the Fourth Proportional to 9,921.12, 14,875.92 and 5,301.60

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Solution

The fourth proportional to 9,921.12, 14,875.92 and 5,301.60 is: 7,949.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.12 : 14,875.92 = 5,301.60 : x
  2. Step 2: Convert to fraction form
    9,921.12/14,875.92 = 5,301.60/x
  3. Step 3: Cross multiply
    9,921.12x = 14,875.92 × 5,301.60
  4. Step 4: Simplify right side
    9,921.12x = 78,866,177.47
  5. Step 5: Solve for x
    x = 78,866,177.47/9,921.12
  6. Step 6: Final answer
    x = 7,949.32

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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.