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Finding the Fourth Proportional to 19,315.31, 28,972.97 and 6,168.71

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Solution

The fourth proportional to 19,315.31, 28,972.97 and 6,168.71 is: 9,253.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315.31 : 28,972.97 = 6,168.71 : x
  2. Step 2: Convert to fraction form
    19,315.31/28,972.97 = 6,168.71/x
  3. Step 3: Cross multiply
    19,315.31x = 28,972.97 × 6,168.71
  4. Step 4: Simplify right side
    19,315.31x = 178,725,734.17
  5. Step 5: Solve for x
    x = 178,725,734.17/19,315.31
  6. Step 6: Final answer
    x = 9,253.06

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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.