Home / 28,169.88-42,275.17-11,075.31

Finding the Fourth Proportional to 28,169.88, 42,275.17 and 11,075.31

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Solution

The fourth proportional to 28,169.88, 42,275.17 and 11,075.31 is: 16,620.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.88 : 42,275.17 = 11,075.31 : x
  2. Step 2: Convert to fraction form
    28,169.88/42,275.17 = 11,075.31/x
  3. Step 3: Cross multiply
    28,169.88x = 42,275.17 × 11,075.31
  4. Step 4: Simplify right side
    28,169.88x = 468,210,613.05
  5. Step 5: Solve for x
    x = 468,210,613.05/28,169.88
  6. Step 6: Final answer
    x = 16,620.97

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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.