Home / 20,344.10-30,531.78-9,102.92

Finding the Fourth Proportional to 20,344.10, 30,531.78 and 9,102.92

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Solution

The fourth proportional to 20,344.10, 30,531.78 and 9,102.92 is: 13,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.10 : 30,531.78 = 9,102.92 : x
  2. Step 2: Convert to fraction form
    20,344.10/30,531.78 = 9,102.92/x
  3. Step 3: Cross multiply
    20,344.10x = 30,531.78 × 9,102.92
  4. Step 4: Simplify right side
    20,344.10x = 277,928,427.13
  5. Step 5: Solve for x
    x = 277,928,427.13/20,344.10
  6. Step 6: Final answer
    x = 13,661.38

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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.