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Finding the Fourth Proportional to 22,479.92, 31,034.72 and 13,529.63

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Solution

The fourth proportional to 22,479.92, 31,034.72 and 13,529.63 is: 18,678.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,479.92 : 31,034.72 = 13,529.63 : x
  2. Step 2: Convert to fraction form
    22,479.92/31,034.72 = 13,529.63/x
  3. Step 3: Cross multiply
    22,479.92x = 31,034.72 × 13,529.63
  4. Step 4: Simplify right side
    22,479.92x = 419,888,157.40
  5. Step 5: Solve for x
    x = 419,888,157.40/22,479.92
  6. Step 6: Final answer
    x = 18,678.36

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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.