Home / 21,356.82-29,472.71-11,925.38

Finding the Fourth Proportional to 21,356.82, 29,472.71 and 11,925.38

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Solution

The fourth proportional to 21,356.82, 29,472.71 and 11,925.38 is: 16,457.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.82 : 29,472.71 = 11,925.38 : x
  2. Step 2: Convert to fraction form
    21,356.82/29,472.71 = 11,925.38/x
  3. Step 3: Cross multiply
    21,356.82x = 29,472.71 × 11,925.38
  4. Step 4: Simplify right side
    21,356.82x = 351,473,059.39
  5. Step 5: Solve for x
    x = 351,473,059.39/21,356.82
  6. Step 6: Final answer
    x = 16,457.18

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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.