Home / 20,806.14-28,712.50-11,374.70

Finding the Fourth Proportional to 20,806.14, 28,712.50 and 11,374.70

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Solution

The fourth proportional to 20,806.14, 28,712.50 and 11,374.70 is: 15,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.14 : 28,712.50 = 11,374.70 : x
  2. Step 2: Convert to fraction form
    20,806.14/28,712.50 = 11,374.70/x
  3. Step 3: Cross multiply
    20,806.14x = 28,712.50 × 11,374.70
  4. Step 4: Simplify right side
    20,806.14x = 326,596,117.09
  5. Step 5: Solve for x
    x = 326,596,117.09/20,806.14
  6. Step 6: Final answer
    x = 15,697.10

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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.