Home / 20,808.47-28,708.66-11,849.62

Finding the Fourth Proportional to 20,808.47, 28,708.66 and 11,849.62

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Solution

The fourth proportional to 20,808.47, 28,708.66 and 11,849.62 is: 16,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.47 : 28,708.66 = 11,849.62 : x
  2. Step 2: Convert to fraction form
    20,808.47/28,708.66 = 11,849.62/x
  3. Step 3: Cross multiply
    20,808.47x = 28,708.66 × 11,849.62
  4. Step 4: Simplify right side
    20,808.47x = 340,186,652.46
  5. Step 5: Solve for x
    x = 340,186,652.46/20,808.47
  6. Step 6: Final answer
    x = 16,348.47

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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.