Home / 21,331.92-29,424.34-12,948.42

Finding the Fourth Proportional to 21,331.92, 29,424.34 and 12,948.42

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Solution

The fourth proportional to 21,331.92, 29,424.34 and 12,948.42 is: 17,860.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.92 : 29,424.34 = 12,948.42 : x
  2. Step 2: Convert to fraction form
    21,331.92/29,424.34 = 12,948.42/x
  3. Step 3: Cross multiply
    21,331.92x = 29,424.34 × 12,948.42
  4. Step 4: Simplify right side
    21,331.92x = 380,998,712.54
  5. Step 5: Solve for x
    x = 380,998,712.54/21,331.92
  6. Step 6: Final answer
    x = 17,860.50

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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.