Home / 13,127.76-19,685.85-3,765.66

Finding the Fourth Proportional to 13,127.76, 19,685.85 and 3,765.66

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Solution

The fourth proportional to 13,127.76, 19,685.85 and 3,765.66 is: 5,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.76 : 19,685.85 = 3,765.66 : x
  2. Step 2: Convert to fraction form
    13,127.76/19,685.85 = 3,765.66/x
  3. Step 3: Cross multiply
    13,127.76x = 19,685.85 × 3,765.66
  4. Step 4: Simplify right side
    13,127.76x = 74,130,217.91
  5. Step 5: Solve for x
    x = 74,130,217.91/13,127.76
  6. Step 6: Final answer
    x = 5,646.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.