Home / 20,115.61-30,163.70-8,869.57

Finding the Fourth Proportional to 20,115.61, 30,163.70 and 8,869.57

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Solution

The fourth proportional to 20,115.61, 30,163.70 and 8,869.57 is: 13,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.61 : 30,163.70 = 8,869.57 : x
  2. Step 2: Convert to fraction form
    20,115.61/30,163.70 = 8,869.57/x
  3. Step 3: Cross multiply
    20,115.61x = 30,163.70 × 8,869.57
  4. Step 4: Simplify right side
    20,115.61x = 267,539,004.26
  5. Step 5: Solve for x
    x = 267,539,004.26/20,115.61
  6. Step 6: Final answer
    x = 13,300.07

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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.