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Finding the Fourth Proportional to 31,652.92, 47,479.26 and 12,928.92

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Solution

The fourth proportional to 31,652.92, 47,479.26 and 12,928.92 is: 19,393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,652.92 : 47,479.26 = 12,928.92 : x
  2. Step 2: Convert to fraction form
    31,652.92/47,479.26 = 12,928.92/x
  3. Step 3: Cross multiply
    31,652.92x = 47,479.26 × 12,928.92
  4. Step 4: Simplify right side
    31,652.92x = 613,855,554.20
  5. Step 5: Solve for x
    x = 613,855,554.20/31,652.92
  6. Step 6: Final answer
    x = 19,393.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.