Home / 20,752.38-28,637.66-11,678.25

Finding the Fourth Proportional to 20,752.38, 28,637.66 and 11,678.25

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Solution

The fourth proportional to 20,752.38, 28,637.66 and 11,678.25 is: 16,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.38 : 28,637.66 = 11,678.25 : x
  2. Step 2: Convert to fraction form
    20,752.38/28,637.66 = 11,678.25/x
  3. Step 3: Cross multiply
    20,752.38x = 28,637.66 × 11,678.25
  4. Step 4: Simplify right side
    20,752.38x = 334,437,694.50
  5. Step 5: Solve for x
    x = 334,437,694.50/20,752.38
  6. Step 6: Final answer
    x = 16,115.63

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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.