Home / 18,947.09-28,386.58-11,151.65

Finding the Fourth Proportional to 18,947.09, 28,386.58 and 11,151.65

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Solution

The fourth proportional to 18,947.09, 28,386.58 and 11,151.65 is: 16,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.09 : 28,386.58 = 11,151.65 : x
  2. Step 2: Convert to fraction form
    18,947.09/28,386.58 = 11,151.65/x
  3. Step 3: Cross multiply
    18,947.09x = 28,386.58 × 11,151.65
  4. Step 4: Simplify right side
    18,947.09x = 316,557,204.86
  5. Step 5: Solve for x
    x = 316,557,204.86/18,947.09
  6. Step 6: Final answer
    x = 16,707.43

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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.