Home / 39,881.17-55,035.30-21,977.83

Finding the Fourth Proportional to 39,881.17, 55,035.30 and 21,977.83

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Solution

The fourth proportional to 39,881.17, 55,035.30 and 21,977.83 is: 30,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.17 : 55,035.30 = 21,977.83 : x
  2. Step 2: Convert to fraction form
    39,881.17/55,035.30 = 21,977.83/x
  3. Step 3: Cross multiply
    39,881.17x = 55,035.30 × 21,977.83
  4. Step 4: Simplify right side
    39,881.17x = 1,209,556,467.40
  5. Step 5: Solve for x
    x = 1,209,556,467.40/39,881.17
  6. Step 6: Final answer
    x = 30,329.01

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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.