Home / 13,429.71-20,144.63-4,545.12

Finding the Fourth Proportional to 13,429.71, 20,144.63 and 4,545.12

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Solution

The fourth proportional to 13,429.71, 20,144.63 and 4,545.12 is: 6,817.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.71 : 20,144.63 = 4,545.12 : x
  2. Step 2: Convert to fraction form
    13,429.71/20,144.63 = 4,545.12/x
  3. Step 3: Cross multiply
    13,429.71x = 20,144.63 × 4,545.12
  4. Step 4: Simplify right side
    13,429.71x = 91,559,847.61
  5. Step 5: Solve for x
    x = 91,559,847.61/13,429.71
  6. Step 6: Final answer
    x = 6,817.71

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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.