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Finding the Fourth Proportional to 29,449.19, 40,639.77 and 16,020.20

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Solution

The fourth proportional to 29,449.19, 40,639.77 and 16,020.20 is: 22,107.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,449.19 : 40,639.77 = 16,020.20 : x
  2. Step 2: Convert to fraction form
    29,449.19/40,639.77 = 16,020.20/x
  3. Step 3: Cross multiply
    29,449.19x = 40,639.77 × 16,020.20
  4. Step 4: Simplify right side
    29,449.19x = 651,057,040.16
  5. Step 5: Solve for x
    x = 651,057,040.16/29,449.19
  6. Step 6: Final answer
    x = 22,107.81

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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.