Home / 20,806.24-28,712.61-11,374.80

Finding the Fourth Proportional to 20,806.24, 28,712.61 and 11,374.80

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Solution

The fourth proportional to 20,806.24, 28,712.61 and 11,374.80 is: 15,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.24 : 28,712.61 = 11,374.80 : x
  2. Step 2: Convert to fraction form
    20,806.24/28,712.61 = 11,374.80/x
  3. Step 3: Cross multiply
    20,806.24x = 28,712.61 × 11,374.80
  4. Step 4: Simplify right side
    20,806.24x = 326,600,196.23
  5. Step 5: Solve for x
    x = 326,600,196.23/20,806.24
  6. Step 6: Final answer
    x = 15,697.22

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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.