Home / 39,871.60-55,025.31-21,966.58

Finding the Fourth Proportional to 39,871.60, 55,025.31 and 21,966.58

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Solution

The fourth proportional to 39,871.60, 55,025.31 and 21,966.58 is: 30,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.60 : 55,025.31 = 21,966.58 : x
  2. Step 2: Convert to fraction form
    39,871.60/55,025.31 = 21,966.58/x
  3. Step 3: Cross multiply
    39,871.60x = 55,025.31 × 21,966.58
  4. Step 4: Simplify right side
    39,871.60x = 1,208,717,874.14
  5. Step 5: Solve for x
    x = 1,208,717,874.14/39,871.60
  6. Step 6: Final answer
    x = 30,315.26

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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.