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Finding the Fourth Proportional to 18,505.18, 27,746.16 and 8,646.40

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Solution

The fourth proportional to 18,505.18, 27,746.16 and 8,646.40 is: 12,964.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.18 : 27,746.16 = 8,646.40 : x
  2. Step 2: Convert to fraction form
    18,505.18/27,746.16 = 8,646.40/x
  3. Step 3: Cross multiply
    18,505.18x = 27,746.16 × 8,646.40
  4. Step 4: Simplify right side
    18,505.18x = 239,904,397.82
  5. Step 5: Solve for x
    x = 239,904,397.82/18,505.18
  6. Step 6: Final answer
    x = 12,964.18

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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.