Home / 28,356.57-42,541.88-11,721.39

Finding the Fourth Proportional to 28,356.57, 42,541.88 and 11,721.39

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Solution

The fourth proportional to 28,356.57, 42,541.88 and 11,721.39 is: 17,584.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.57 : 42,541.88 = 11,721.39 : x
  2. Step 2: Convert to fraction form
    28,356.57/42,541.88 = 11,721.39/x
  3. Step 3: Cross multiply
    28,356.57x = 42,541.88 × 11,721.39
  4. Step 4: Simplify right side
    28,356.57x = 498,649,908.21
  5. Step 5: Solve for x
    x = 498,649,908.21/28,356.57
  6. Step 6: Final answer
    x = 17,584.99

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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.