Home / 20,110.60-30,146.70-15,665.80

Finding the Fourth Proportional to 20,110.60, 30,146.70 and 15,665.80

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Solution

The fourth proportional to 20,110.60, 30,146.70 and 15,665.80 is: 23,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.60 : 30,146.70 = 15,665.80 : x
  2. Step 2: Convert to fraction form
    20,110.60/30,146.70 = 15,665.80/x
  3. Step 3: Cross multiply
    20,110.60x = 30,146.70 × 15,665.80
  4. Step 4: Simplify right side
    20,110.60x = 472,272,172.86
  5. Step 5: Solve for x
    x = 472,272,172.86/20,110.60
  6. Step 6: Final answer
    x = 23,483.74

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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.