Home / 20,817.24-28,727.91-12,319.26

Finding the Fourth Proportional to 20,817.24, 28,727.91 and 12,319.26

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Solution

The fourth proportional to 20,817.24, 28,727.91 and 12,319.26 is: 17,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.24 : 28,727.91 = 12,319.26 : x
  2. Step 2: Convert to fraction form
    20,817.24/28,727.91 = 12,319.26/x
  3. Step 3: Cross multiply
    20,817.24x = 28,727.91 × 12,319.26
  4. Step 4: Simplify right side
    20,817.24x = 353,906,592.55
  5. Step 5: Solve for x
    x = 353,906,592.55/20,817.24
  6. Step 6: Final answer
    x = 17,000.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.