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Finding the Fourth Proportional to 19,099.79, 28,654.64 and 7,253.76

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Solution

The fourth proportional to 19,099.79, 28,654.64 and 7,253.76 is: 10,882.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.79 : 28,654.64 = 7,253.76 : x
  2. Step 2: Convert to fraction form
    19,099.79/28,654.64 = 7,253.76/x
  3. Step 3: Cross multiply
    19,099.79x = 28,654.64 × 7,253.76
  4. Step 4: Simplify right side
    19,099.79x = 207,853,979.83
  5. Step 5: Solve for x
    x = 207,853,979.83/19,099.79
  6. Step 6: Final answer
    x = 10,882.53

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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.