Home / 13,064.12-18,031.10-7,761.88

Finding the Fourth Proportional to 13,064.12, 18,031.10 and 7,761.88

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Solution

The fourth proportional to 13,064.12, 18,031.10 and 7,761.88 is: 10,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,064.12 : 18,031.10 = 7,761.88 : x
  2. Step 2: Convert to fraction form
    13,064.12/18,031.10 = 7,761.88/x
  3. Step 3: Cross multiply
    13,064.12x = 18,031.10 × 7,761.88
  4. Step 4: Simplify right side
    13,064.12x = 139,955,234.47
  5. Step 5: Solve for x
    x = 139,955,234.47/13,064.12
  6. Step 6: Final answer
    x = 10,712.95

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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.