Home / 15,131.52-20,887.20-8,845.92

Finding the Fourth Proportional to 15,131.52, 20,887.20 and 8,845.92

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Solution

The fourth proportional to 15,131.52, 20,887.20 and 8,845.92 is: 12,210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.52 : 20,887.20 = 8,845.92 : x
  2. Step 2: Convert to fraction form
    15,131.52/20,887.20 = 8,845.92/x
  3. Step 3: Cross multiply
    15,131.52x = 20,887.20 × 8,845.92
  4. Step 4: Simplify right side
    15,131.52x = 184,766,500.22
  5. Step 5: Solve for x
    x = 184,766,500.22/15,131.52
  6. Step 6: Final answer
    x = 12,210.70

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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.