Home / 20,666.28-28,518.52-11,713.58

Finding the Fourth Proportional to 20,666.28, 28,518.52 and 11,713.58

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Solution

The fourth proportional to 20,666.28, 28,518.52 and 11,713.58 is: 16,164.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.28 : 28,518.52 = 11,713.58 : x
  2. Step 2: Convert to fraction form
    20,666.28/28,518.52 = 11,713.58/x
  3. Step 3: Cross multiply
    20,666.28x = 28,518.52 × 11,713.58
  4. Step 4: Simplify right side
    20,666.28x = 334,053,965.50
  5. Step 5: Solve for x
    x = 334,053,965.50/20,666.28
  6. Step 6: Final answer
    x = 16,164.20

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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.