Home / 31,687.74-47,554.50-12,456.35

Finding the Fourth Proportional to 31,687.74, 47,554.50 and 12,456.35

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Solution

The fourth proportional to 31,687.74, 47,554.50 and 12,456.35 is: 18,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.74 : 47,554.50 = 12,456.35 : x
  2. Step 2: Convert to fraction form
    31,687.74/47,554.50 = 12,456.35/x
  3. Step 3: Cross multiply
    31,687.74x = 47,554.50 × 12,456.35
  4. Step 4: Simplify right side
    31,687.74x = 592,355,448.31
  5. Step 5: Solve for x
    x = 592,355,448.31/31,687.74
  6. Step 6: Final answer
    x = 18,693.52

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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.