Home / 20,084.60-30,008.08-19,395.56

Finding the Fourth Proportional to 20,084.60, 30,008.08 and 19,395.56

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Solution

The fourth proportional to 20,084.60, 30,008.08 and 19,395.56 is: 28,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.60 : 30,008.08 = 19,395.56 : x
  2. Step 2: Convert to fraction form
    20,084.60/30,008.08 = 19,395.56/x
  3. Step 3: Cross multiply
    20,084.60x = 30,008.08 × 19,395.56
  4. Step 4: Simplify right side
    20,084.60x = 582,023,516.12
  5. Step 5: Solve for x
    x = 582,023,516.12/20,084.60
  6. Step 6: Final answer
    x = 28,978.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.