Home / 11,358.68-15,674.18-7,109.55

Finding the Fourth Proportional to 11,358.68, 15,674.18 and 7,109.55

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Solution

The fourth proportional to 11,358.68, 15,674.18 and 7,109.55 is: 9,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.68 : 15,674.18 = 7,109.55 : x
  2. Step 2: Convert to fraction form
    11,358.68/15,674.18 = 7,109.55/x
  3. Step 3: Cross multiply
    11,358.68x = 15,674.18 × 7,109.55
  4. Step 4: Simplify right side
    11,358.68x = 111,436,330.87
  5. Step 5: Solve for x
    x = 111,436,330.87/11,358.68
  6. Step 6: Final answer
    x = 9,810.68

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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.