Home / 21,377.62-29,500.61-12,428.24

Finding the Fourth Proportional to 21,377.62, 29,500.61 and 12,428.24

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Solution

The fourth proportional to 21,377.62, 29,500.61 and 12,428.24 is: 17,150.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.62 : 29,500.61 = 12,428.24 : x
  2. Step 2: Convert to fraction form
    21,377.62/29,500.61 = 12,428.24/x
  3. Step 3: Cross multiply
    21,377.62x = 29,500.61 × 12,428.24
  4. Step 4: Simplify right side
    21,377.62x = 366,640,451.58
  5. Step 5: Solve for x
    x = 366,640,451.58/21,377.62
  6. Step 6: Final answer
    x = 17,150.67

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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.