Home / 39,414.75-54,393.50-21,510.90

Finding the Fourth Proportional to 39,414.75, 54,393.50 and 21,510.90

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Solution

The fourth proportional to 39,414.75, 54,393.50 and 21,510.90 is: 29,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,414.75 : 54,393.50 = 21,510.90 : x
  2. Step 2: Convert to fraction form
    39,414.75/54,393.50 = 21,510.90/x
  3. Step 3: Cross multiply
    39,414.75x = 54,393.50 × 21,510.90
  4. Step 4: Simplify right side
    39,414.75x = 1,170,053,192.93
  5. Step 5: Solve for x
    x = 1,170,053,192.93/39,414.75
  6. Step 6: Final answer
    x = 29,685.67

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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.