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Finding the Fourth Proportional to 18,354.59, 27,531.87 and 5,207.07

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Solution

The fourth proportional to 18,354.59, 27,531.87 and 5,207.07 is: 7,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.59 : 27,531.87 = 5,207.07 : x
  2. Step 2: Convert to fraction form
    18,354.59/27,531.87 = 5,207.07/x
  3. Step 3: Cross multiply
    18,354.59x = 27,531.87 × 5,207.07
  4. Step 4: Simplify right side
    18,354.59x = 143,360,374.32
  5. Step 5: Solve for x
    x = 143,360,374.32/18,354.59
  6. Step 6: Final answer
    x = 7,810.60

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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.