Home / 31,641.49-43,701.11-21,552.40

Finding the Fourth Proportional to 31,641.49, 43,701.11 and 21,552.40

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Solution

The fourth proportional to 31,641.49, 43,701.11 and 21,552.40 is: 29,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,641.49 : 43,701.11 = 21,552.40 : x
  2. Step 2: Convert to fraction form
    31,641.49/43,701.11 = 21,552.40/x
  3. Step 3: Cross multiply
    31,641.49x = 43,701.11 × 21,552.40
  4. Step 4: Simplify right side
    31,641.49x = 941,863,803.16
  5. Step 5: Solve for x
    x = 941,863,803.16/31,641.49
  6. Step 6: Final answer
    x = 29,766.73

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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.