Home / 18,985.28-26,198.72-11,026.88

Finding the Fourth Proportional to 18,985.28, 26,198.72 and 11,026.88

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Solution

The fourth proportional to 18,985.28, 26,198.72 and 11,026.88 is: 15,216.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.28 : 26,198.72 = 11,026.88 : x
  2. Step 2: Convert to fraction form
    18,985.28/26,198.72 = 11,026.88/x
  3. Step 3: Cross multiply
    18,985.28x = 26,198.72 × 11,026.88
  4. Step 4: Simplify right side
    18,985.28x = 288,890,141.59
  5. Step 5: Solve for x
    x = 288,890,141.59/18,985.28
  6. Step 6: Final answer
    x = 15,216.53

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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.