Home / 28,934.40-39,929.28-16,359.20

Finding the Fourth Proportional to 28,934.40, 39,929.28 and 16,359.20

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Solution

The fourth proportional to 28,934.40, 39,929.28 and 16,359.20 is: 22,575.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,934.40 : 39,929.28 = 16,359.20 : x
  2. Step 2: Convert to fraction form
    28,934.40/39,929.28 = 16,359.20/x
  3. Step 3: Cross multiply
    28,934.40x = 39,929.28 × 16,359.20
  4. Step 4: Simplify right side
    28,934.40x = 653,211,077.38
  5. Step 5: Solve for x
    x = 653,211,077.38/28,934.40
  6. Step 6: Final answer
    x = 22,575.59

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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.