Home / 31,918.95-47,877.50-8,545.38

Finding the Fourth Proportional to 31,918.95, 47,877.50 and 8,545.38

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Solution

The fourth proportional to 31,918.95, 47,877.50 and 8,545.38 is: 12,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.95 : 47,877.50 = 8,545.38 : x
  2. Step 2: Convert to fraction form
    31,918.95/47,877.50 = 8,545.38/x
  3. Step 3: Cross multiply
    31,918.95x = 47,877.50 × 8,545.38
  4. Step 4: Simplify right side
    31,918.95x = 409,131,388.22
  5. Step 5: Solve for x
    x = 409,131,388.22/31,918.95
  6. Step 6: Final answer
    x = 12,817.82

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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.