Home / 13,422.11-20,136.81-4,657.71

Finding the Fourth Proportional to 13,422.11, 20,136.81 and 4,657.71

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Solution

The fourth proportional to 13,422.11, 20,136.81 and 4,657.71 is: 6,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.11 : 20,136.81 = 4,657.71 : x
  2. Step 2: Convert to fraction form
    13,422.11/20,136.81 = 4,657.71/x
  3. Step 3: Cross multiply
    13,422.11x = 20,136.81 × 4,657.71
  4. Step 4: Simplify right side
    13,422.11x = 93,791,401.01
  5. Step 5: Solve for x
    x = 93,791,401.01/13,422.11
  6. Step 6: Final answer
    x = 6,987.83

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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.