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Finding the Fourth Proportional to 18,750.96, 28,126.44 and 7,654.68

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Solution

The fourth proportional to 18,750.96, 28,126.44 and 7,654.68 is: 11,482.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.96 : 28,126.44 = 7,654.68 : x
  2. Step 2: Convert to fraction form
    18,750.96/28,126.44 = 7,654.68/x
  3. Step 3: Cross multiply
    18,750.96x = 28,126.44 × 7,654.68
  4. Step 4: Simplify right side
    18,750.96x = 215,298,897.74
  5. Step 5: Solve for x
    x = 215,298,897.74/18,750.96
  6. Step 6: Final answer
    x = 11,482.02

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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.