Home / 28,228.16-42,339.51-17,131.91

Finding the Fourth Proportional to 28,228.16, 42,339.51 and 17,131.91

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Solution

The fourth proportional to 28,228.16, 42,339.51 and 17,131.91 is: 25,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.16 : 42,339.51 = 17,131.91 : x
  2. Step 2: Convert to fraction form
    28,228.16/42,339.51 = 17,131.91/x
  3. Step 3: Cross multiply
    28,228.16x = 42,339.51 × 17,131.91
  4. Step 4: Simplify right side
    28,228.16x = 725,356,463.07
  5. Step 5: Solve for x
    x = 725,356,463.07/28,228.16
  6. Step 6: Final answer
    x = 25,696.20

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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.