Home / 20,713.59-28,587.57-12,218.10

Finding the Fourth Proportional to 20,713.59, 28,587.57 and 12,218.10

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Solution

The fourth proportional to 20,713.59, 28,587.57 and 12,218.10 is: 16,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.59 : 28,587.57 = 12,218.10 : x
  2. Step 2: Convert to fraction form
    20,713.59/28,587.57 = 12,218.10/x
  3. Step 3: Cross multiply
    20,713.59x = 28,587.57 × 12,218.10
  4. Step 4: Simplify right side
    20,713.59x = 349,285,789.02
  5. Step 5: Solve for x
    x = 349,285,789.02/20,713.59
  6. Step 6: Final answer
    x = 16,862.64

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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.