Home / 30,972.14-42,719.78-19,042.04

Finding the Fourth Proportional to 30,972.14, 42,719.78 and 19,042.04

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Solution

The fourth proportional to 30,972.14, 42,719.78 and 19,042.04 is: 26,264.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,972.14 : 42,719.78 = 19,042.04 : x
  2. Step 2: Convert to fraction form
    30,972.14/42,719.78 = 19,042.04/x
  3. Step 3: Cross multiply
    30,972.14x = 42,719.78 × 19,042.04
  4. Step 4: Simplify right side
    30,972.14x = 813,471,759.55
  5. Step 5: Solve for x
    x = 813,471,759.55/30,972.14
  6. Step 6: Final answer
    x = 26,264.63

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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.