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Finding the Fourth Proportional to 12,681.62, 19,026.92 and 5,660.98

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Solution

The fourth proportional to 12,681.62, 19,026.92 and 5,660.98 is: 8,493.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.62 : 19,026.92 = 5,660.98 : x
  2. Step 2: Convert to fraction form
    12,681.62/19,026.92 = 5,660.98/x
  3. Step 3: Cross multiply
    12,681.62x = 19,026.92 × 5,660.98
  4. Step 4: Simplify right side
    12,681.62x = 107,711,013.58
  5. Step 5: Solve for x
    x = 107,711,013.58/12,681.62
  6. Step 6: Final answer
    x = 8,493.47

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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.