Home / 28,388.09-42,541.98-15,743.44

Finding the Fourth Proportional to 28,388.09, 42,541.98 and 15,743.44

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Solution

The fourth proportional to 28,388.09, 42,541.98 and 15,743.44 is: 23,592.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.09 : 42,541.98 = 15,743.44 : x
  2. Step 2: Convert to fraction form
    28,388.09/42,541.98 = 15,743.44/x
  3. Step 3: Cross multiply
    28,388.09x = 42,541.98 × 15,743.44
  4. Step 4: Simplify right side
    28,388.09x = 669,757,109.61
  5. Step 5: Solve for x
    x = 669,757,109.61/28,388.09
  6. Step 6: Final answer
    x = 23,592.89

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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.