Home / 21,876.76-30,192.36-12,316.92

Finding the Fourth Proportional to 21,876.76, 30,192.36 and 12,316.92

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Solution

The fourth proportional to 21,876.76, 30,192.36 and 12,316.92 is: 16,998.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.76 : 30,192.36 = 12,316.92 : x
  2. Step 2: Convert to fraction form
    21,876.76/30,192.36 = 12,316.92/x
  3. Step 3: Cross multiply
    21,876.76x = 30,192.36 × 12,316.92
  4. Step 4: Simplify right side
    21,876.76x = 371,876,882.73
  5. Step 5: Solve for x
    x = 371,876,882.73/21,876.76
  6. Step 6: Final answer
    x = 16,998.72

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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.