Home / 42,243.28-63,382.44-18,538.47

Finding the Fourth Proportional to 42,243.28, 63,382.44 and 18,538.47

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Solution

The fourth proportional to 42,243.28, 63,382.44 and 18,538.47 is: 27,815.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,243.28 : 63,382.44 = 18,538.47 : x
  2. Step 2: Convert to fraction form
    42,243.28/63,382.44 = 18,538.47/x
  3. Step 3: Cross multiply
    42,243.28x = 63,382.44 × 18,538.47
  4. Step 4: Simplify right side
    42,243.28x = 1,175,013,462.47
  5. Step 5: Solve for x
    x = 1,175,013,462.47/42,243.28
  6. Step 6: Final answer
    x = 27,815.39

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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.