Home / 15,876.48-21,906.68-9,162.39

Finding the Fourth Proportional to 15,876.48, 21,906.68 and 9,162.39

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Solution

The fourth proportional to 15,876.48, 21,906.68 and 9,162.39 is: 12,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.48 : 21,906.68 = 9,162.39 : x
  2. Step 2: Convert to fraction form
    15,876.48/21,906.68 = 9,162.39/x
  3. Step 3: Cross multiply
    15,876.48x = 21,906.68 × 9,162.39
  4. Step 4: Simplify right side
    15,876.48x = 200,717,499.95
  5. Step 5: Solve for x
    x = 200,717,499.95/15,876.48
  6. Step 6: Final answer
    x = 12,642.44

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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.