Home / 20,247.90-30,526.03-18,820.87

Finding the Fourth Proportional to 20,247.90, 30,526.03 and 18,820.87

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Solution

The fourth proportional to 20,247.90, 30,526.03 and 18,820.87 is: 28,374.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.90 : 30,526.03 = 18,820.87 : x
  2. Step 2: Convert to fraction form
    20,247.90/30,526.03 = 18,820.87/x
  3. Step 3: Cross multiply
    20,247.90x = 30,526.03 × 18,820.87
  4. Step 4: Simplify right side
    20,247.90x = 574,526,442.25
  5. Step 5: Solve for x
    x = 574,526,442.25/20,247.90
  6. Step 6: Final answer
    x = 28,374.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.