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Finding the Fourth Proportional to 12,687.76, 19,034.52 and 6,844.24

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Solution

The fourth proportional to 12,687.76, 19,034.52 and 6,844.24 is: 10,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.76 : 19,034.52 = 6,844.24 : x
  2. Step 2: Convert to fraction form
    12,687.76/19,034.52 = 6,844.24/x
  3. Step 3: Cross multiply
    12,687.76x = 19,034.52 × 6,844.24
  4. Step 4: Simplify right side
    12,687.76x = 130,276,823.16
  5. Step 5: Solve for x
    x = 130,276,823.16/12,687.76
  6. Step 6: Final answer
    x = 10,267.91

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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.