Home / 29,269.50-40,391.90-15,840.75

Finding the Fourth Proportional to 29,269.50, 40,391.90 and 15,840.75

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Solution

The fourth proportional to 29,269.50, 40,391.90 and 15,840.75 is: 21,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,269.50 : 40,391.90 = 15,840.75 : x
  2. Step 2: Convert to fraction form
    29,269.50/40,391.90 = 15,840.75/x
  3. Step 3: Cross multiply
    29,269.50x = 40,391.90 × 15,840.75
  4. Step 4: Simplify right side
    29,269.50x = 639,837,989.93
  5. Step 5: Solve for x
    x = 639,837,989.93/29,269.50
  6. Step 6: Final answer
    x = 21,860.23

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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.