Home / 28,778.28-43,156.04-13,982.82

Finding the Fourth Proportional to 28,778.28, 43,156.04 and 13,982.82

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Solution

The fourth proportional to 28,778.28, 43,156.04 and 13,982.82 is: 20,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.28 : 43,156.04 = 13,982.82 : x
  2. Step 2: Convert to fraction form
    28,778.28/43,156.04 = 13,982.82/x
  3. Step 3: Cross multiply
    28,778.28x = 43,156.04 × 13,982.82
  4. Step 4: Simplify right side
    28,778.28x = 603,443,139.23
  5. Step 5: Solve for x
    x = 603,443,139.23/28,778.28
  6. Step 6: Final answer
    x = 20,968.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.