Home / 26,772.15-40,142.01-11,978.31

Finding the Fourth Proportional to 26,772.15, 40,142.01 and 11,978.31

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Solution

The fourth proportional to 26,772.15, 40,142.01 and 11,978.31 is: 17,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,772.15 : 40,142.01 = 11,978.31 : x
  2. Step 2: Convert to fraction form
    26,772.15/40,142.01 = 11,978.31/x
  3. Step 3: Cross multiply
    26,772.15x = 40,142.01 × 11,978.31
  4. Step 4: Simplify right side
    26,772.15x = 480,833,439.80
  5. Step 5: Solve for x
    x = 480,833,439.80/26,772.15
  6. Step 6: Final answer
    x = 17,960.21

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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.