Home / 31,402.08-47,084.90-12,666.78

Finding the Fourth Proportional to 31,402.08, 47,084.90 and 12,666.78

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Solution

The fourth proportional to 31,402.08, 47,084.90 and 12,666.78 is: 18,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,402.08 : 47,084.90 = 12,666.78 : x
  2. Step 2: Convert to fraction form
    31,402.08/47,084.90 = 12,666.78/x
  3. Step 3: Cross multiply
    31,402.08x = 47,084.90 × 12,666.78
  4. Step 4: Simplify right side
    31,402.08x = 596,414,006.29
  5. Step 5: Solve for x
    x = 596,414,006.29/31,402.08
  6. Step 6: Final answer
    x = 18,992.82

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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.