Home / 18,882.13-28,268.51-14,221.76

Finding the Fourth Proportional to 18,882.13, 28,268.51 and 14,221.76

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Solution

The fourth proportional to 18,882.13, 28,268.51 and 14,221.76 is: 21,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.13 : 28,268.51 = 14,221.76 : x
  2. Step 2: Convert to fraction form
    18,882.13/28,268.51 = 14,221.76/x
  3. Step 3: Cross multiply
    18,882.13x = 28,268.51 × 14,221.76
  4. Step 4: Simplify right side
    18,882.13x = 402,028,140.59
  5. Step 5: Solve for x
    x = 402,028,140.59/18,882.13
  6. Step 6: Final answer
    x = 21,291.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.