Home / 20,337.25-28,065.13-11,384.75

Finding the Fourth Proportional to 20,337.25, 28,065.13 and 11,384.75

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Solution

The fourth proportional to 20,337.25, 28,065.13 and 11,384.75 is: 15,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.25 : 28,065.13 = 11,384.75 : x
  2. Step 2: Convert to fraction form
    20,337.25/28,065.13 = 11,384.75/x
  3. Step 3: Cross multiply
    20,337.25x = 28,065.13 × 11,384.75
  4. Step 4: Simplify right side
    20,337.25x = 319,514,594.51
  5. Step 5: Solve for x
    x = 319,514,594.51/20,337.25
  6. Step 6: Final answer
    x = 15,710.80

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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.