Home / 21,262.32-29,355.12-13,711.32

Finding the Fourth Proportional to 21,262.32, 29,355.12 and 13,711.32

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Solution

The fourth proportional to 21,262.32, 29,355.12 and 13,711.32 is: 18,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.32 : 29,355.12 = 13,711.32 : x
  2. Step 2: Convert to fraction form
    21,262.32/29,355.12 = 13,711.32/x
  3. Step 3: Cross multiply
    21,262.32x = 29,355.12 × 13,711.32
  4. Step 4: Simplify right side
    21,262.32x = 402,497,443.96
  5. Step 5: Solve for x
    x = 402,497,443.96/21,262.32
  6. Step 6: Final answer
    x = 18,930.08

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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.