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Finding the Fourth Proportional to 20,025.04, 30,030 and 8,920.84

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Solution

The fourth proportional to 20,025.04, 30,030 and 8,920.84 is: 13,377.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,025.04 : 30,030 = 8,920.84 : x
  2. Step 2: Convert to fraction form
    20,025.04/30,030 = 8,920.84/x
  3. Step 3: Cross multiply
    20,025.04x = 30,030 × 8,920.84
  4. Step 4: Simplify right side
    20,025.04x = 267,892,825.20
  5. Step 5: Solve for x
    x = 267,892,825.20/20,025.04
  6. Step 6: Final answer
    x = 13,377.89

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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.