Home / 21,356.64-29,471.52-11,925.12

Finding the Fourth Proportional to 21,356.64, 29,471.52 and 11,925.12

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Solution

The fourth proportional to 21,356.64, 29,471.52 and 11,925.12 is: 16,456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.64 : 29,471.52 = 11,925.12 : x
  2. Step 2: Convert to fraction form
    21,356.64/29,471.52 = 11,925.12/x
  3. Step 3: Cross multiply
    21,356.64x = 29,471.52 × 11,925.12
  4. Step 4: Simplify right side
    21,356.64x = 351,451,412.58
  5. Step 5: Solve for x
    x = 351,451,412.58/21,356.64
  6. Step 6: Final answer
    x = 16,456.31

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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.