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Finding the Fourth Proportional to 8,714.88, 13,019.04 and 7,176.96

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Solution

The fourth proportional to 8,714.88, 13,019.04 and 7,176.96 is: 10,721.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.88 : 13,019.04 = 7,176.96 : x
  2. Step 2: Convert to fraction form
    8,714.88/13,019.04 = 7,176.96/x
  3. Step 3: Cross multiply
    8,714.88x = 13,019.04 × 7,176.96
  4. Step 4: Simplify right side
    8,714.88x = 93,437,129.32
  5. Step 5: Solve for x
    x = 93,437,129.32/8,714.88
  6. Step 6: Final answer
    x = 10,721.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.