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Finding the Fourth Proportional to 12,407.94, 18,613.80 and 8,624.70

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Solution

The fourth proportional to 12,407.94, 18,613.80 and 8,624.70 is: 12,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.94 : 18,613.80 = 8,624.70 : x
  2. Step 2: Convert to fraction form
    12,407.94/18,613.80 = 8,624.70/x
  3. Step 3: Cross multiply
    12,407.94x = 18,613.80 × 8,624.70
  4. Step 4: Simplify right side
    12,407.94x = 160,538,440.86
  5. Step 5: Solve for x
    x = 160,538,440.86/12,407.94
  6. Step 6: Final answer
    x = 12,938.36

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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.