Home / 11,114.36-15,343.40-8,590.78

Finding the Fourth Proportional to 11,114.36, 15,343.40 and 8,590.78

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Solution

The fourth proportional to 11,114.36, 15,343.40 and 8,590.78 is: 11,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,114.36 : 15,343.40 = 8,590.78 : x
  2. Step 2: Convert to fraction form
    11,114.36/15,343.40 = 8,590.78/x
  3. Step 3: Cross multiply
    11,114.36x = 15,343.40 × 8,590.78
  4. Step 4: Simplify right side
    11,114.36x = 131,811,704.04
  5. Step 5: Solve for x
    x = 131,811,704.04/11,114.36
  6. Step 6: Final answer
    x = 11,859.58

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Double scale
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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.