Home / 15,134.15-20,887.67-8,760.91

Finding the Fourth Proportional to 15,134.15, 20,887.67 and 8,760.91

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Solution

The fourth proportional to 15,134.15, 20,887.67 and 8,760.91 is: 12,091.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.15 : 20,887.67 = 8,760.91 : x
  2. Step 2: Convert to fraction form
    15,134.15/20,887.67 = 8,760.91/x
  3. Step 3: Cross multiply
    15,134.15x = 20,887.67 × 8,760.91
  4. Step 4: Simplify right side
    15,134.15x = 182,994,996.98
  5. Step 5: Solve for x
    x = 182,994,996.98/15,134.15
  6. Step 6: Final answer
    x = 12,091.53

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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.