Home / 13,459.40-18,583.12-8,425.66

Finding the Fourth Proportional to 13,459.40, 18,583.12 and 8,425.66

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Solution

The fourth proportional to 13,459.40, 18,583.12 and 8,425.66 is: 11,633.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.40 : 18,583.12 = 8,425.66 : x
  2. Step 2: Convert to fraction form
    13,459.40/18,583.12 = 8,425.66/x
  3. Step 3: Cross multiply
    13,459.40x = 18,583.12 × 8,425.66
  4. Step 4: Simplify right side
    13,459.40x = 156,575,050.86
  5. Step 5: Solve for x
    x = 156,575,050.86/13,459.40
  6. Step 6: Final answer
    x = 11,633.14

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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.