Home / 47,748.80-71,622.84-12,690.92

Finding the Fourth Proportional to 47,748.80, 71,622.84 and 12,690.92

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Solution

The fourth proportional to 47,748.80, 71,622.84 and 12,690.92 is: 19,036.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,748.80 : 71,622.84 = 12,690.92 : x
  2. Step 2: Convert to fraction form
    47,748.80/71,622.84 = 12,690.92/x
  3. Step 3: Cross multiply
    47,748.80x = 71,622.84 × 12,690.92
  4. Step 4: Simplify right side
    47,748.80x = 908,959,732.61
  5. Step 5: Solve for x
    x = 908,959,732.61/47,748.80
  6. Step 6: Final answer
    x = 19,036.28

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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.