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Finding the Fourth Proportional to 8,748.47, 13,128.11 and 6,958.93

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Solution

The fourth proportional to 8,748.47, 13,128.11 and 6,958.93 is: 10,442.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,748.47 : 13,128.11 = 6,958.93 : x
  2. Step 2: Convert to fraction form
    8,748.47/13,128.11 = 6,958.93/x
  3. Step 3: Cross multiply
    8,748.47x = 13,128.11 × 6,958.93
  4. Step 4: Simplify right side
    8,748.47x = 91,357,598.52
  5. Step 5: Solve for x
    x = 91,357,598.52/8,748.47
  6. Step 6: Final answer
    x = 10,442.69

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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.