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Finding the Fourth Proportional to 12,347.55, 18,520.19 and 3,463.71

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Solution

The fourth proportional to 12,347.55, 18,520.19 and 3,463.71 is: 5,195.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.55 : 18,520.19 = 3,463.71 : x
  2. Step 2: Convert to fraction form
    12,347.55/18,520.19 = 3,463.71/x
  3. Step 3: Cross multiply
    12,347.55x = 18,520.19 × 3,463.71
  4. Step 4: Simplify right side
    12,347.55x = 64,148,549.99
  5. Step 5: Solve for x
    x = 64,148,549.99/12,347.55
  6. Step 6: Final answer
    x = 5,195.25

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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.