Home / 21,789.66-30,097.86-18,028.02

Finding the Fourth Proportional to 21,789.66, 30,097.86 and 18,028.02

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Solution

The fourth proportional to 21,789.66, 30,097.86 and 18,028.02 is: 24,901.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.66 : 30,097.86 = 18,028.02 : x
  2. Step 2: Convert to fraction form
    21,789.66/30,097.86 = 18,028.02/x
  3. Step 3: Cross multiply
    21,789.66x = 30,097.86 × 18,028.02
  4. Step 4: Simplify right side
    21,789.66x = 542,604,822.04
  5. Step 5: Solve for x
    x = 542,604,822.04/21,789.66
  6. Step 6: Final answer
    x = 24,901.94

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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.