Home / 13,434.72-20,151.93-8,171.19

Finding the Fourth Proportional to 13,434.72, 20,151.93 and 8,171.19

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Solution

The fourth proportional to 13,434.72, 20,151.93 and 8,171.19 is: 12,256.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.72 : 20,151.93 = 8,171.19 : x
  2. Step 2: Convert to fraction form
    13,434.72/20,151.93 = 8,171.19/x
  3. Step 3: Cross multiply
    13,434.72x = 20,151.93 × 8,171.19
  4. Step 4: Simplify right side
    13,434.72x = 164,665,248.90
  5. Step 5: Solve for x
    x = 164,665,248.90/13,434.72
  6. Step 6: Final answer
    x = 12,256.69

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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.