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Finding the Fourth Proportional to 10,449.78, 15,653.97 and 6,290.88

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Solution

The fourth proportional to 10,449.78, 15,653.97 and 6,290.88 is: 9,423.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,449.78 : 15,653.97 = 6,290.88 : x
  2. Step 2: Convert to fraction form
    10,449.78/15,653.97 = 6,290.88/x
  3. Step 3: Cross multiply
    10,449.78x = 15,653.97 × 6,290.88
  4. Step 4: Simplify right side
    10,449.78x = 98,477,246.79
  5. Step 5: Solve for x
    x = 98,477,246.79/10,449.78
  6. Step 6: Final answer
    x = 9,423.86

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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.