Home / 13,423.14-18,520.92-8,117.82

Finding the Fourth Proportional to 13,423.14, 18,520.92 and 8,117.82

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Solution

The fourth proportional to 13,423.14, 18,520.92 and 8,117.82 is: 11,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.14 : 18,520.92 = 8,117.82 : x
  2. Step 2: Convert to fraction form
    13,423.14/18,520.92 = 8,117.82/x
  3. Step 3: Cross multiply
    13,423.14x = 18,520.92 × 8,117.82
  4. Step 4: Simplify right side
    13,423.14x = 150,349,494.79
  5. Step 5: Solve for x
    x = 150,349,494.79/13,423.14
  6. Step 6: Final answer
    x = 11,200.77

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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.