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Finding the Fourth Proportional to 15,891.88, 23,845.50 and 6,538.80

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Solution

The fourth proportional to 15,891.88, 23,845.50 and 6,538.80 is: 9,811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.88 : 23,845.50 = 6,538.80 : x
  2. Step 2: Convert to fraction form
    15,891.88/23,845.50 = 6,538.80/x
  3. Step 3: Cross multiply
    15,891.88x = 23,845.50 × 6,538.80
  4. Step 4: Simplify right side
    15,891.88x = 155,920,955.40
  5. Step 5: Solve for x
    x = 155,920,955.40/15,891.88
  6. Step 6: Final answer
    x = 9,811.36

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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.