Home / 30,949.59-42,717.45-19,634.70

Finding the Fourth Proportional to 30,949.59, 42,717.45 and 19,634.70

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Solution

The fourth proportional to 30,949.59, 42,717.45 and 19,634.70 is: 27,100.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,949.59 : 42,717.45 = 19,634.70 : x
  2. Step 2: Convert to fraction form
    30,949.59/42,717.45 = 19,634.70/x
  3. Step 3: Cross multiply
    30,949.59x = 42,717.45 × 19,634.70
  4. Step 4: Simplify right side
    30,949.59x = 838,744,315.52
  5. Step 5: Solve for x
    x = 838,744,315.52/30,949.59
  6. Step 6: Final answer
    x = 27,100.34

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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.