Home / 21,141.39-31,712.04-17,187.96

Finding the Fourth Proportional to 21,141.39, 31,712.04 and 17,187.96

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Solution

The fourth proportional to 21,141.39, 31,712.04 and 17,187.96 is: 25,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.39 : 31,712.04 = 17,187.96 : x
  2. Step 2: Convert to fraction form
    21,141.39/31,712.04 = 17,187.96/x
  3. Step 3: Cross multiply
    21,141.39x = 31,712.04 × 17,187.96
  4. Step 4: Simplify right side
    21,141.39x = 545,065,275.04
  5. Step 5: Solve for x
    x = 545,065,275.04/21,141.39
  6. Step 6: Final answer
    x = 25,781.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.