Home / 28,729.08-39,649.50-16,151.40

Finding the Fourth Proportional to 28,729.08, 39,649.50 and 16,151.40

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Solution

The fourth proportional to 28,729.08, 39,649.50 and 16,151.40 is: 22,290.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.08 : 39,649.50 = 16,151.40 : x
  2. Step 2: Convert to fraction form
    28,729.08/39,649.50 = 16,151.40/x
  3. Step 3: Cross multiply
    28,729.08x = 39,649.50 × 16,151.40
  4. Step 4: Simplify right side
    28,729.08x = 640,394,934.30
  5. Step 5: Solve for x
    x = 640,394,934.30/28,729.08
  6. Step 6: Final answer
    x = 22,290.83

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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.