Home / 20,541.41-28,347.15-11,109.97

Finding the Fourth Proportional to 20,541.41, 28,347.15 and 11,109.97

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Solution

The fourth proportional to 20,541.41, 28,347.15 and 11,109.97 is: 15,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.41 : 28,347.15 = 11,109.97 : x
  2. Step 2: Convert to fraction form
    20,541.41/28,347.15 = 11,109.97/x
  3. Step 3: Cross multiply
    20,541.41x = 28,347.15 × 11,109.97
  4. Step 4: Simplify right side
    20,541.41x = 314,936,040.55
  5. Step 5: Solve for x
    x = 314,936,040.55/20,541.41
  6. Step 6: Final answer
    x = 15,331.76

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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.