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Finding the Fourth Proportional to 12,471.62, 18,597.16 and 12,360.45

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Solution

The fourth proportional to 12,471.62, 18,597.16 and 12,360.45 is: 18,431.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.62 : 18,597.16 = 12,360.45 : x
  2. Step 2: Convert to fraction form
    12,471.62/18,597.16 = 12,360.45/x
  3. Step 3: Cross multiply
    12,471.62x = 18,597.16 × 12,360.45
  4. Step 4: Simplify right side
    12,471.62x = 229,869,204.24
  5. Step 5: Solve for x
    x = 229,869,204.24/12,471.62
  6. Step 6: Final answer
    x = 18,431.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.