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Finding the Fourth Proportional to 23,891.31, 32,960.79 and 15,392.79

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Solution

The fourth proportional to 23,891.31, 32,960.79 and 15,392.79 is: 21,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,891.31 : 32,960.79 = 15,392.79 : x
  2. Step 2: Convert to fraction form
    23,891.31/32,960.79 = 15,392.79/x
  3. Step 3: Cross multiply
    23,891.31x = 32,960.79 × 15,392.79
  4. Step 4: Simplify right side
    23,891.31x = 507,358,518.70
  5. Step 5: Solve for x
    x = 507,358,518.70/23,891.31
  6. Step 6: Final answer
    x = 21,236.11

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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.