Home / 29,269.45-40,391.84-15,840.71

Finding the Fourth Proportional to 29,269.45, 40,391.84 and 15,840.71

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Solution

The fourth proportional to 29,269.45, 40,391.84 and 15,840.71 is: 21,860.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,269.45 : 40,391.84 = 15,840.71 : x
  2. Step 2: Convert to fraction form
    29,269.45/40,391.84 = 15,840.71/x
  3. Step 3: Cross multiply
    29,269.45x = 40,391.84 × 15,840.71
  4. Step 4: Simplify right side
    29,269.45x = 639,835,412.92
  5. Step 5: Solve for x
    x = 639,835,412.92/29,269.45
  6. Step 6: Final answer
    x = 21,860.18

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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.