Home / 22,631.05-31,232.79-12,561.43

Finding the Fourth Proportional to 22,631.05, 31,232.79 and 12,561.43

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Solution

The fourth proportional to 22,631.05, 31,232.79 and 12,561.43 is: 17,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,631.05 : 31,232.79 = 12,561.43 : x
  2. Step 2: Convert to fraction form
    22,631.05/31,232.79 = 12,561.43/x
  3. Step 3: Cross multiply
    22,631.05x = 31,232.79 × 12,561.43
  4. Step 4: Simplify right side
    22,631.05x = 392,328,485.77
  5. Step 5: Solve for x
    x = 392,328,485.77/22,631.05
  6. Step 6: Final answer
    x = 17,335.85

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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.