Home / 28,971.28-39,982.56-16,223.82

Finding the Fourth Proportional to 28,971.28, 39,982.56 and 16,223.82

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Solution

The fourth proportional to 28,971.28, 39,982.56 and 16,223.82 is: 22,390.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.28 : 39,982.56 = 16,223.82 : x
  2. Step 2: Convert to fraction form
    28,971.28/39,982.56 = 16,223.82/x
  3. Step 3: Cross multiply
    28,971.28x = 39,982.56 × 16,223.82
  4. Step 4: Simplify right side
    28,971.28x = 648,669,856.58
  5. Step 5: Solve for x
    x = 648,669,856.58/28,971.28
  6. Step 6: Final answer
    x = 22,390.10

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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.