Home / 31,721.95-43,775.13-18,293.77

Finding the Fourth Proportional to 31,721.95, 43,775.13 and 18,293.77

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Solution

The fourth proportional to 31,721.95, 43,775.13 and 18,293.77 is: 25,244.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.95 : 43,775.13 = 18,293.77 : x
  2. Step 2: Convert to fraction form
    31,721.95/43,775.13 = 18,293.77/x
  3. Step 3: Cross multiply
    31,721.95x = 43,775.13 × 18,293.77
  4. Step 4: Simplify right side
    31,721.95x = 800,812,159.94
  5. Step 5: Solve for x
    x = 800,812,159.94/31,721.95
  6. Step 6: Final answer
    x = 25,244.73

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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.