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Finding the Fourth Proportional to 10,479.69, 15,741.45 and 8,839.44

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Solution

The fourth proportional to 10,479.69, 15,741.45 and 8,839.44 is: 13,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.69 : 15,741.45 = 8,839.44 : x
  2. Step 2: Convert to fraction form
    10,479.69/15,741.45 = 8,839.44/x
  3. Step 3: Cross multiply
    10,479.69x = 15,741.45 × 8,839.44
  4. Step 4: Simplify right side
    10,479.69x = 139,145,602.79
  5. Step 5: Solve for x
    x = 139,145,602.79/10,479.69
  6. Step 6: Final answer
    x = 13,277.64

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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.