Home / 18,965.27-28,456.10-7,275.75

Finding the Fourth Proportional to 18,965.27, 28,456.10 and 7,275.75

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Solution

The fourth proportional to 18,965.27, 28,456.10 and 7,275.75 is: 10,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.27 : 28,456.10 = 7,275.75 : x
  2. Step 2: Convert to fraction form
    18,965.27/28,456.10 = 7,275.75/x
  3. Step 3: Cross multiply
    18,965.27x = 28,456.10 × 7,275.75
  4. Step 4: Simplify right side
    18,965.27x = 207,039,460.48
  5. Step 5: Solve for x
    x = 207,039,460.48/18,965.27
  6. Step 6: Final answer
    x = 10,916.77

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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.