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Finding the Fourth Proportional to 12,352.64, 18,547.42 and 12,168.11

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Solution

The fourth proportional to 12,352.64, 18,547.42 and 12,168.11 is: 18,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,352.64 : 18,547.42 = 12,168.11 : x
  2. Step 2: Convert to fraction form
    12,352.64/18,547.42 = 12,168.11/x
  3. Step 3: Cross multiply
    12,352.64x = 18,547.42 × 12,168.11
  4. Step 4: Simplify right side
    12,352.64x = 225,687,062.72
  5. Step 5: Solve for x
    x = 225,687,062.72/12,352.64
  6. Step 6: Final answer
    x = 18,270.35

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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.