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Finding the Fourth Proportional to 18,854.39, 28,281.65 and 6,374.52

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Solution

The fourth proportional to 18,854.39, 28,281.65 and 6,374.52 is: 9,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854.39 : 28,281.65 = 6,374.52 : x
  2. Step 2: Convert to fraction form
    18,854.39/28,281.65 = 6,374.52/x
  3. Step 3: Cross multiply
    18,854.39x = 28,281.65 × 6,374.52
  4. Step 4: Simplify right side
    18,854.39x = 180,281,911.69
  5. Step 5: Solve for x
    x = 180,281,911.69/18,854.39
  6. Step 6: Final answer
    x = 9,561.80

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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.