Home / 20,666.52-28,518.87-11,713.83

Finding the Fourth Proportional to 20,666.52, 28,518.87 and 11,713.83

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Solution

The fourth proportional to 20,666.52, 28,518.87 and 11,713.83 is: 16,164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.52 : 28,518.87 = 11,713.83 : x
  2. Step 2: Convert to fraction form
    20,666.52/28,518.87 = 11,713.83/x
  3. Step 3: Cross multiply
    20,666.52x = 28,518.87 × 11,713.83
  4. Step 4: Simplify right side
    20,666.52x = 334,065,194.97
  5. Step 5: Solve for x
    x = 334,065,194.97/20,666.52
  6. Step 6: Final answer
    x = 16,164.56

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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.