Home / 39,874.96-55,029.94-21,969.98

Finding the Fourth Proportional to 39,874.96, 55,029.94 and 21,969.98

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Solution

The fourth proportional to 39,874.96, 55,029.94 and 21,969.98 is: 30,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,874.96 : 55,029.94 = 21,969.98 : x
  2. Step 2: Convert to fraction form
    39,874.96/55,029.94 = 21,969.98/x
  3. Step 3: Cross multiply
    39,874.96x = 55,029.94 × 21,969.98
  4. Step 4: Simplify right side
    39,874.96x = 1,209,006,681.20
  5. Step 5: Solve for x
    x = 1,209,006,681.20/39,874.96
  6. Step 6: Final answer
    x = 30,319.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.