Home / 39,218.80-58,834.29-12,915.28

Finding the Fourth Proportional to 39,218.80, 58,834.29 and 12,915.28

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Solution

The fourth proportional to 39,218.80, 58,834.29 and 12,915.28 is: 19,374.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,218.80 : 58,834.29 = 12,915.28 : x
  2. Step 2: Convert to fraction form
    39,218.80/58,834.29 = 12,915.28/x
  3. Step 3: Cross multiply
    39,218.80x = 58,834.29 × 12,915.28
  4. Step 4: Simplify right side
    39,218.80x = 759,861,328.95
  5. Step 5: Solve for x
    x = 759,861,328.95/39,218.80
  6. Step 6: Final answer
    x = 19,374.93

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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.