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Finding the Fourth Proportional to 15,990.52, 23,990.78 and 6,634.95

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Solution

The fourth proportional to 15,990.52, 23,990.78 and 6,634.95 is: 9,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.52 : 23,990.78 = 6,634.95 : x
  2. Step 2: Convert to fraction form
    15,990.52/23,990.78 = 6,634.95/x
  3. Step 3: Cross multiply
    15,990.52x = 23,990.78 × 6,634.95
  4. Step 4: Simplify right side
    15,990.52x = 159,177,642.35
  5. Step 5: Solve for x
    x = 159,177,642.35/15,990.52
  6. Step 6: Final answer
    x = 9,954.50

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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.