Home / 20,109.72-30,169.98-8,866.02

Finding the Fourth Proportional to 20,109.72, 30,169.98 and 8,866.02

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Solution

The fourth proportional to 20,109.72, 30,169.98 and 8,866.02 is: 13,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.72 : 30,169.98 = 8,866.02 : x
  2. Step 2: Convert to fraction form
    20,109.72/30,169.98 = 8,866.02/x
  3. Step 3: Cross multiply
    20,109.72x = 30,169.98 × 8,866.02
  4. Step 4: Simplify right side
    20,109.72x = 267,487,646.08
  5. Step 5: Solve for x
    x = 267,487,646.08/20,109.72
  6. Step 6: Final answer
    x = 13,301.41

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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.