Home / 20,442.90-30,671.91-8,765.22

Finding the Fourth Proportional to 20,442.90, 30,671.91 and 8,765.22

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Solution

The fourth proportional to 20,442.90, 30,671.91 and 8,765.22 is: 13,151.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.90 : 30,671.91 = 8,765.22 : x
  2. Step 2: Convert to fraction form
    20,442.90/30,671.91 = 8,765.22/x
  3. Step 3: Cross multiply
    20,442.90x = 30,671.91 × 8,765.22
  4. Step 4: Simplify right side
    20,442.90x = 268,846,038.97
  5. Step 5: Solve for x
    x = 268,846,038.97/20,442.90
  6. Step 6: Final answer
    x = 13,151.07

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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.