Home / 42,368.38-63,511.23-20,175.78

Finding the Fourth Proportional to 42,368.38, 63,511.23 and 20,175.78

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Solution

The fourth proportional to 42,368.38, 63,511.23 and 20,175.78 is: 30,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,368.38 : 63,511.23 = 20,175.78 : x
  2. Step 2: Convert to fraction form
    42,368.38/63,511.23 = 20,175.78/x
  3. Step 3: Cross multiply
    42,368.38x = 63,511.23 × 20,175.78
  4. Step 4: Simplify right side
    42,368.38x = 1,281,388,604.01
  5. Step 5: Solve for x
    x = 1,281,388,604.01/42,368.38
  6. Step 6: Final answer
    x = 30,243.98

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1.5x scale

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.