Home / 13,381.69-20,062.61-8,117.91

Finding the Fourth Proportional to 13,381.69, 20,062.61 and 8,117.91

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Solution

The fourth proportional to 13,381.69, 20,062.61 and 8,117.91 is: 12,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.69 : 20,062.61 = 8,117.91 : x
  2. Step 2: Convert to fraction form
    13,381.69/20,062.61 = 8,117.91/x
  3. Step 3: Cross multiply
    13,381.69x = 20,062.61 × 8,117.91
  4. Step 4: Simplify right side
    13,381.69x = 162,866,462.35
  5. Step 5: Solve for x
    x = 162,866,462.35/13,381.69
  6. Step 6: Final answer
    x = 12,170.84

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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.