Home / 15,138.24-22,690.56-11,428.44

Finding the Fourth Proportional to 15,138.24, 22,690.56 and 11,428.44

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Solution

The fourth proportional to 15,138.24, 22,690.56 and 11,428.44 is: 17,129.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.24 : 22,690.56 = 11,428.44 : x
  2. Step 2: Convert to fraction form
    15,138.24/22,690.56 = 11,428.44/x
  3. Step 3: Cross multiply
    15,138.24x = 22,690.56 × 11,428.44
  4. Step 4: Simplify right side
    15,138.24x = 259,317,703.53
  5. Step 5: Solve for x
    x = 259,317,703.53/15,138.24
  6. Step 6: Final answer
    x = 17,129.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.