Home / 12,454.05-18,657.18-8,281.47

Finding the Fourth Proportional to 12,454.05, 18,657.18 and 8,281.47

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Solution

The fourth proportional to 12,454.05, 18,657.18 and 8,281.47 is: 12,406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.05 : 18,657.18 = 8,281.47 : x
  2. Step 2: Convert to fraction form
    12,454.05/18,657.18 = 8,281.47/x
  3. Step 3: Cross multiply
    12,454.05x = 18,657.18 × 8,281.47
  4. Step 4: Simplify right side
    12,454.05x = 154,508,876.45
  5. Step 5: Solve for x
    x = 154,508,876.45/12,454.05
  6. Step 6: Final answer
    x = 12,406.32

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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.