Home / 15,440.13-21,299.55-9,765.32

Finding the Fourth Proportional to 15,440.13, 21,299.55 and 9,765.32

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Solution

The fourth proportional to 15,440.13, 21,299.55 and 9,765.32 is: 13,471.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.13 : 21,299.55 = 9,765.32 : x
  2. Step 2: Convert to fraction form
    15,440.13/21,299.55 = 9,765.32/x
  3. Step 3: Cross multiply
    15,440.13x = 21,299.55 × 9,765.32
  4. Step 4: Simplify right side
    15,440.13x = 207,996,921.61
  5. Step 5: Solve for x
    x = 207,996,921.61/15,440.13
  6. Step 6: Final answer
    x = 13,471.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.