Home / 20,337.69-28,066.52-11,385.12

Finding the Fourth Proportional to 20,337.69, 28,066.52 and 11,385.12

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Solution

The fourth proportional to 20,337.69, 28,066.52 and 11,385.12 is: 15,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.69 : 28,066.52 = 11,385.12 : x
  2. Step 2: Convert to fraction form
    20,337.69/28,066.52 = 11,385.12/x
  3. Step 3: Cross multiply
    20,337.69x = 28,066.52 × 11,385.12
  4. Step 4: Simplify right side
    20,337.69x = 319,540,698.18
  5. Step 5: Solve for x
    x = 319,540,698.18/20,337.69
  6. Step 6: Final answer
    x = 15,711.75

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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.