Home / 11,223.66-15,487.40-7,188.65

Finding the Fourth Proportional to 11,223.66, 15,487.40 and 7,188.65

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Solution

The fourth proportional to 11,223.66, 15,487.40 and 7,188.65 is: 9,919.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,223.66 : 15,487.40 = 7,188.65 : x
  2. Step 2: Convert to fraction form
    11,223.66/15,487.40 = 7,188.65/x
  3. Step 3: Cross multiply
    11,223.66x = 15,487.40 × 7,188.65
  4. Step 4: Simplify right side
    11,223.66x = 111,333,496.62
  5. Step 5: Solve for x
    x = 111,333,496.62/11,223.66
  6. Step 6: Final answer
    x = 9,919.53

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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.