Home / 13,151.17-19,731.39-8,215.03

Finding the Fourth Proportional to 13,151.17, 19,731.39 and 8,215.03

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Solution

The fourth proportional to 13,151.17, 19,731.39 and 8,215.03 is: 12,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.17 : 19,731.39 = 8,215.03 : x
  2. Step 2: Convert to fraction form
    13,151.17/19,731.39 = 8,215.03/x
  3. Step 3: Cross multiply
    13,151.17x = 19,731.39 × 8,215.03
  4. Step 4: Simplify right side
    13,151.17x = 162,093,960.79
  5. Step 5: Solve for x
    x = 162,093,960.79/13,151.17
  6. Step 6: Final answer
    x = 12,325.44

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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.