Home / 12,717.25-17,545.61-7,679.56

Finding the Fourth Proportional to 12,717.25, 17,545.61 and 7,679.56

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Solution

The fourth proportional to 12,717.25, 17,545.61 and 7,679.56 is: 10,595.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.25 : 17,545.61 = 7,679.56 : x
  2. Step 2: Convert to fraction form
    12,717.25/17,545.61 = 7,679.56/x
  3. Step 3: Cross multiply
    12,717.25x = 17,545.61 × 7,679.56
  4. Step 4: Simplify right side
    12,717.25x = 134,742,482.47
  5. Step 5: Solve for x
    x = 134,742,482.47/12,717.25
  6. Step 6: Final answer
    x = 10,595.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.