Home / 15,545.08-21,451.60-8,471.08

Finding the Fourth Proportional to 15,545.08, 21,451.60 and 8,471.08

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Solution

The fourth proportional to 15,545.08, 21,451.60 and 8,471.08 is: 11,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.08 : 21,451.60 = 8,471.08 : x
  2. Step 2: Convert to fraction form
    15,545.08/21,451.60 = 8,471.08/x
  3. Step 3: Cross multiply
    15,545.08x = 21,451.60 × 8,471.08
  4. Step 4: Simplify right side
    15,545.08x = 181,718,219.73
  5. Step 5: Solve for x
    x = 181,718,219.73/15,545.08
  6. Step 6: Final answer
    x = 11,689.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.