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Finding the Fourth Proportional to 10,668.88, 15,968.46 and 9,645.78

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Solution

The fourth proportional to 10,668.88, 15,968.46 and 9,645.78 is: 14,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,668.88 : 15,968.46 = 9,645.78 : x
  2. Step 2: Convert to fraction form
    10,668.88/15,968.46 = 9,645.78/x
  3. Step 3: Cross multiply
    10,668.88x = 15,968.46 × 9,645.78
  4. Step 4: Simplify right side
    10,668.88x = 154,028,252.10
  5. Step 5: Solve for x
    x = 154,028,252.10/10,668.88
  6. Step 6: Final answer
    x = 14,437.15

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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.