Home / 20,347.50-28,097.45-12,806.44

Finding the Fourth Proportional to 20,347.50, 28,097.45 and 12,806.44

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Solution

The fourth proportional to 20,347.50, 28,097.45 and 12,806.44 is: 17,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.50 : 28,097.45 = 12,806.44 : x
  2. Step 2: Convert to fraction form
    20,347.50/28,097.45 = 12,806.44/x
  3. Step 3: Cross multiply
    20,347.50x = 28,097.45 × 12,806.44
  4. Step 4: Simplify right side
    20,347.50x = 359,828,221.33
  5. Step 5: Solve for x
    x = 359,828,221.33/20,347.50
  6. Step 6: Final answer
    x = 17,684.15

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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.