Home / 20,967.20-28,934.04-11,535.74

Finding the Fourth Proportional to 20,967.20, 28,934.04 and 11,535.74

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Solution

The fourth proportional to 20,967.20, 28,934.04 and 11,535.74 is: 15,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.20 : 28,934.04 = 11,535.74 : x
  2. Step 2: Convert to fraction form
    20,967.20/28,934.04 = 11,535.74/x
  3. Step 3: Cross multiply
    20,967.20x = 28,934.04 × 11,535.74
  4. Step 4: Simplify right side
    20,967.20x = 333,775,562.59
  5. Step 5: Solve for x
    x = 333,775,562.59/20,967.20
  6. Step 6: Final answer
    x = 15,918.94

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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.