Home / 20,434.08-28,195.56-12,877.50

Finding the Fourth Proportional to 20,434.08, 28,195.56 and 12,877.50

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Solution

The fourth proportional to 20,434.08, 28,195.56 and 12,877.50 is: 17,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.08 : 28,195.56 = 12,877.50 : x
  2. Step 2: Convert to fraction form
    20,434.08/28,195.56 = 12,877.50/x
  3. Step 3: Cross multiply
    20,434.08x = 28,195.56 × 12,877.50
  4. Step 4: Simplify right side
    20,434.08x = 363,088,323.90
  5. Step 5: Solve for x
    x = 363,088,323.90/20,434.08
  6. Step 6: Final answer
    x = 17,768.76

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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.