Home / 20,677.50-28,535.16-11,246.10

Finding the Fourth Proportional to 20,677.50, 28,535.16 and 11,246.10

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Solution

The fourth proportional to 20,677.50, 28,535.16 and 11,246.10 is: 15,519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.50 : 28,535.16 = 11,246.10 : x
  2. Step 2: Convert to fraction form
    20,677.50/28,535.16 = 11,246.10/x
  3. Step 3: Cross multiply
    20,677.50x = 28,535.16 × 11,246.10
  4. Step 4: Simplify right side
    20,677.50x = 320,909,262.88
  5. Step 5: Solve for x
    x = 320,909,262.88/20,677.50
  6. Step 6: Final answer
    x = 15,519.73

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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.