Home / 28,915.52-39,907.69-18,306.14

Finding the Fourth Proportional to 28,915.52, 39,907.69 and 18,306.14

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Solution

The fourth proportional to 28,915.52, 39,907.69 and 18,306.14 is: 25,265.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.52 : 39,907.69 = 18,306.14 : x
  2. Step 2: Convert to fraction form
    28,915.52/39,907.69 = 18,306.14/x
  3. Step 3: Cross multiply
    28,915.52x = 39,907.69 × 18,306.14
  4. Step 4: Simplify right side
    28,915.52x = 730,555,514.91
  5. Step 5: Solve for x
    x = 730,555,514.91/28,915.52
  6. Step 6: Final answer
    x = 25,265.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.