Home / 34,068.15-47,015.60-18,961.78

Finding the Fourth Proportional to 34,068.15, 47,015.60 and 18,961.78

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Solution

The fourth proportional to 34,068.15, 47,015.60 and 18,961.78 is: 26,168.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,068.15 : 47,015.60 = 18,961.78 : x
  2. Step 2: Convert to fraction form
    34,068.15/47,015.60 = 18,961.78/x
  3. Step 3: Cross multiply
    34,068.15x = 47,015.60 × 18,961.78
  4. Step 4: Simplify right side
    34,068.15x = 891,499,375.13
  5. Step 5: Solve for x
    x = 891,499,375.13/34,068.15
  6. Step 6: Final answer
    x = 26,168.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.