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Finding the Fourth Proportional to 12,691.03, 19,033.07 and 7,061.77

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Solution

The fourth proportional to 12,691.03, 19,033.07 and 7,061.77 is: 10,590.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.03 : 19,033.07 = 7,061.77 : x
  2. Step 2: Convert to fraction form
    12,691.03/19,033.07 = 7,061.77/x
  3. Step 3: Cross multiply
    12,691.03x = 19,033.07 × 7,061.77
  4. Step 4: Simplify right side
    12,691.03x = 134,407,162.73
  5. Step 5: Solve for x
    x = 134,407,162.73/12,691.03
  6. Step 6: Final answer
    x = 10,590.72

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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.