Home / 39,768.17-54,877.91-21,860.28

Finding the Fourth Proportional to 39,768.17, 54,877.91 and 21,860.28

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Solution

The fourth proportional to 39,768.17, 54,877.91 and 21,860.28 is: 30,166.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,768.17 : 54,877.91 = 21,860.28 : x
  2. Step 2: Convert to fraction form
    39,768.17/54,877.91 = 21,860.28/x
  3. Step 3: Cross multiply
    39,768.17x = 54,877.91 × 21,860.28
  4. Step 4: Simplify right side
    39,768.17x = 1,199,646,369.11
  5. Step 5: Solve for x
    x = 1,199,646,369.11/39,768.17
  6. Step 6: Final answer
    x = 30,166.00

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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.