Home / 39,871.46-55,025.14-21,966.48

Finding the Fourth Proportional to 39,871.46, 55,025.14 and 21,966.48

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Solution

The fourth proportional to 39,871.46, 55,025.14 and 21,966.48 is: 30,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.46 : 55,025.14 = 21,966.48 : x
  2. Step 2: Convert to fraction form
    39,871.46/55,025.14 = 21,966.48/x
  3. Step 3: Cross multiply
    39,871.46x = 55,025.14 × 21,966.48
  4. Step 4: Simplify right side
    39,871.46x = 1,208,708,637.31
  5. Step 5: Solve for x
    x = 1,208,708,637.31/39,871.46
  6. Step 6: Final answer
    x = 30,315.13

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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.