Home / 29,100.15-40,141.31-18,340.80

Finding the Fourth Proportional to 29,100.15, 40,141.31 and 18,340.80

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Solution

The fourth proportional to 29,100.15, 40,141.31 and 18,340.80 is: 25,299.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,100.15 : 40,141.31 = 18,340.80 : x
  2. Step 2: Convert to fraction form
    29,100.15/40,141.31 = 18,340.80/x
  3. Step 3: Cross multiply
    29,100.15x = 40,141.31 × 18,340.80
  4. Step 4: Simplify right side
    29,100.15x = 736,223,738.45
  5. Step 5: Solve for x
    x = 736,223,738.45/29,100.15
  6. Step 6: Final answer
    x = 25,299.65

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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.