Home / 31,376.62-43,306.41-18,808.66

Finding the Fourth Proportional to 31,376.62, 43,306.41 and 18,808.66

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Solution

The fourth proportional to 31,376.62, 43,306.41 and 18,808.66 is: 25,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,376.62 : 43,306.41 = 18,808.66 : x
  2. Step 2: Convert to fraction form
    31,376.62/43,306.41 = 18,808.66/x
  3. Step 3: Cross multiply
    31,376.62x = 43,306.41 × 18,808.66
  4. Step 4: Simplify right side
    31,376.62x = 814,535,541.51
  5. Step 5: Solve for x
    x = 814,535,541.51/31,376.62
  6. Step 6: Final answer
    x = 25,959.95

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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.