Home / 21,154.29-29,192.49-11,722.77

Finding the Fourth Proportional to 21,154.29, 29,192.49 and 11,722.77

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Solution

The fourth proportional to 21,154.29, 29,192.49 and 11,722.77 is: 16,177.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.29 : 29,192.49 = 11,722.77 : x
  2. Step 2: Convert to fraction form
    21,154.29/29,192.49 = 11,722.77/x
  3. Step 3: Cross multiply
    21,154.29x = 29,192.49 × 11,722.77
  4. Step 4: Simplify right side
    21,154.29x = 342,216,787.38
  5. Step 5: Solve for x
    x = 342,216,787.38/21,154.29
  6. Step 6: Final answer
    x = 16,177.18

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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.