Home / 42,448.80-63,673.20-12,865.17

Finding the Fourth Proportional to 42,448.80, 63,673.20 and 12,865.17

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Solution

The fourth proportional to 42,448.80, 63,673.20 and 12,865.17 is: 19,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,448.80 : 63,673.20 = 12,865.17 : x
  2. Step 2: Convert to fraction form
    42,448.80/63,673.20 = 12,865.17/x
  3. Step 3: Cross multiply
    42,448.80x = 63,673.20 × 12,865.17
  4. Step 4: Simplify right side
    42,448.80x = 819,166,542.44
  5. Step 5: Solve for x
    x = 819,166,542.44/42,448.80
  6. Step 6: Final answer
    x = 19,297.76

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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.