Home / 13,127.85-18,115.77-7,461.86

Finding the Fourth Proportional to 13,127.85, 18,115.77 and 7,461.86

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Solution

The fourth proportional to 13,127.85, 18,115.77 and 7,461.86 is: 10,296.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.85 : 18,115.77 = 7,461.86 : x
  2. Step 2: Convert to fraction form
    13,127.85/18,115.77 = 7,461.86/x
  3. Step 3: Cross multiply
    13,127.85x = 18,115.77 × 7,461.86
  4. Step 4: Simplify right side
    13,127.85x = 135,177,248.95
  5. Step 5: Solve for x
    x = 135,177,248.95/13,127.85
  6. Step 6: Final answer
    x = 10,296.98

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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.