Home / 25,781.15-35,574.82-15,705.95

Finding the Fourth Proportional to 25,781.15, 35,574.82 and 15,705.95

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Solution

The fourth proportional to 25,781.15, 35,574.82 and 15,705.95 is: 21,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.15 : 35,574.82 = 15,705.95 : x
  2. Step 2: Convert to fraction form
    25,781.15/35,574.82 = 15,705.95/x
  3. Step 3: Cross multiply
    25,781.15x = 35,574.82 × 15,705.95
  4. Step 4: Simplify right side
    25,781.15x = 558,736,127.04
  5. Step 5: Solve for x
    x = 558,736,127.04/25,781.15
  6. Step 6: Final answer
    x = 21,672.27

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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.