Home / 31,878.06-47,818.79-9,689.73

Finding the Fourth Proportional to 31,878.06, 47,818.79 and 9,689.73

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Solution

The fourth proportional to 31,878.06, 47,818.79 and 9,689.73 is: 14,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.06 : 47,818.79 = 9,689.73 : x
  2. Step 2: Convert to fraction form
    31,878.06/47,818.79 = 9,689.73/x
  3. Step 3: Cross multiply
    31,878.06x = 47,818.79 × 9,689.73
  4. Step 4: Simplify right side
    31,878.06x = 463,350,972.59
  5. Step 5: Solve for x
    x = 463,350,972.59/31,878.06
  6. Step 6: Final answer
    x = 14,535.11

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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.