Home / 12,458.90-18,675.18-5,432.76

Finding the Fourth Proportional to 12,458.90, 18,675.18 and 5,432.76

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Solution

The fourth proportional to 12,458.90, 18,675.18 and 5,432.76 is: 8,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.90 : 18,675.18 = 5,432.76 : x
  2. Step 2: Convert to fraction form
    12,458.90/18,675.18 = 5,432.76/x
  3. Step 3: Cross multiply
    12,458.90x = 18,675.18 × 5,432.76
  4. Step 4: Simplify right side
    12,458.90x = 101,457,770.90
  5. Step 5: Solve for x
    x = 101,457,770.90/12,458.90
  6. Step 6: Final answer
    x = 8,143.40

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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.