Home / 22,672.64-31,288.95-13,721.78

Finding the Fourth Proportional to 22,672.64, 31,288.95 and 13,721.78

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Solution

The fourth proportional to 22,672.64, 31,288.95 and 13,721.78 is: 18,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,672.64 : 31,288.95 = 13,721.78 : x
  2. Step 2: Convert to fraction form
    22,672.64/31,288.95 = 13,721.78/x
  3. Step 3: Cross multiply
    22,672.64x = 31,288.95 × 13,721.78
  4. Step 4: Simplify right side
    22,672.64x = 429,340,088.33
  5. Step 5: Solve for x
    x = 429,340,088.33/22,672.64
  6. Step 6: Final answer
    x = 18,936.48

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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.