Home / 11,581.90-15,977.13-7,325.78

Finding the Fourth Proportional to 11,581.90, 15,977.13 and 7,325.78

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Solution

The fourth proportional to 11,581.90, 15,977.13 and 7,325.78 is: 10,105.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.90 : 15,977.13 = 7,325.78 : x
  2. Step 2: Convert to fraction form
    11,581.90/15,977.13 = 7,325.78/x
  3. Step 3: Cross multiply
    11,581.90x = 15,977.13 × 7,325.78
  4. Step 4: Simplify right side
    11,581.90x = 117,044,832.05
  5. Step 5: Solve for x
    x = 117,044,832.05/11,581.90
  6. Step 6: Final answer
    x = 10,105.84

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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.