Home / 12,740.27-19,101.68-6,488.18

Finding the Fourth Proportional to 12,740.27, 19,101.68 and 6,488.18

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Solution

The fourth proportional to 12,740.27, 19,101.68 and 6,488.18 is: 9,727.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.27 : 19,101.68 = 6,488.18 : x
  2. Step 2: Convert to fraction form
    12,740.27/19,101.68 = 6,488.18/x
  3. Step 3: Cross multiply
    12,740.27x = 19,101.68 × 6,488.18
  4. Step 4: Simplify right side
    12,740.27x = 123,935,138.14
  5. Step 5: Solve for x
    x = 123,935,138.14/12,740.27
  6. Step 6: Final answer
    x = 9,727.83

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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.