Home / 20,114.60-30,152.70-15,669.80

Finding the Fourth Proportional to 20,114.60, 30,152.70 and 15,669.80

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Solution

The fourth proportional to 20,114.60, 30,152.70 and 15,669.80 is: 23,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.60 : 30,152.70 = 15,669.80 : x
  2. Step 2: Convert to fraction form
    20,114.60/30,152.70 = 15,669.80/x
  3. Step 3: Cross multiply
    20,114.60x = 30,152.70 × 15,669.80
  4. Step 4: Simplify right side
    20,114.60x = 472,486,778.46
  5. Step 5: Solve for x
    x = 472,486,778.46/20,114.60
  6. Step 6: Final answer
    x = 23,489.74

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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.