Home / 18,945.36-28,384.11-11,545.92

Finding the Fourth Proportional to 18,945.36, 28,384.11 and 11,545.92

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Solution

The fourth proportional to 18,945.36, 28,384.11 and 11,545.92 is: 17,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.36 : 28,384.11 = 11,545.92 : x
  2. Step 2: Convert to fraction form
    18,945.36/28,384.11 = 11,545.92/x
  3. Step 3: Cross multiply
    18,945.36x = 28,384.11 × 11,545.92
  4. Step 4: Simplify right side
    18,945.36x = 327,720,663.33
  5. Step 5: Solve for x
    x = 327,720,663.33/18,945.36
  6. Step 6: Final answer
    x = 17,298.20

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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.