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Finding the Fourth Proportional to 22,765.40, 34,148.10 and 20,173.40

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Solution

The fourth proportional to 22,765.40, 34,148.10 and 20,173.40 is: 30,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,765.40 : 34,148.10 = 20,173.40 : x
  2. Step 2: Convert to fraction form
    22,765.40/34,148.10 = 20,173.40/x
  3. Step 3: Cross multiply
    22,765.40x = 34,148.10 × 20,173.40
  4. Step 4: Simplify right side
    22,765.40x = 688,883,280.54
  5. Step 5: Solve for x
    x = 688,883,280.54/22,765.40
  6. Step 6: Final answer
    x = 30,260.10

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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.