Home / 20,814.76-28,697.25-15,150.43

Finding the Fourth Proportional to 20,814.76, 28,697.25 and 15,150.43

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Solution

The fourth proportional to 20,814.76, 28,697.25 and 15,150.43 is: 20,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,814.76 : 28,697.25 = 15,150.43 : x
  2. Step 2: Convert to fraction form
    20,814.76/28,697.25 = 15,150.43/x
  3. Step 3: Cross multiply
    20,814.76x = 28,697.25 × 15,150.43
  4. Step 4: Simplify right side
    20,814.76x = 434,775,677.32
  5. Step 5: Solve for x
    x = 434,775,677.32/20,814.76
  6. Step 6: Final answer
    x = 20,887.85

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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.