Home / 31,120.17-42,981.66-22,660.11

Finding the Fourth Proportional to 31,120.17, 42,981.66 and 22,660.11

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Solution

The fourth proportional to 31,120.17, 42,981.66 and 22,660.11 is: 31,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.17 : 42,981.66 = 22,660.11 : x
  2. Step 2: Convert to fraction form
    31,120.17/42,981.66 = 22,660.11/x
  3. Step 3: Cross multiply
    31,120.17x = 42,981.66 × 22,660.11
  4. Step 4: Simplify right side
    31,120.17x = 973,969,143.58
  5. Step 5: Solve for x
    x = 973,969,143.58/31,120.17
  6. Step 6: Final answer
    x = 31,297.04

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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.