Home / 12,270.15-18,407.66-4,478.76

Finding the Fourth Proportional to 12,270.15, 18,407.66 and 4,478.76

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Solution

The fourth proportional to 12,270.15, 18,407.66 and 4,478.76 is: 6,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.15 : 18,407.66 = 4,478.76 : x
  2. Step 2: Convert to fraction form
    12,270.15/18,407.66 = 4,478.76/x
  3. Step 3: Cross multiply
    12,270.15x = 18,407.66 × 4,478.76
  4. Step 4: Simplify right side
    12,270.15x = 82,443,468.91
  5. Step 5: Solve for x
    x = 82,443,468.91/12,270.15
  6. Step 6: Final answer
    x = 6,719.03

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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.