Home / 39,871.62-55,022.58-21,966.21

Finding the Fourth Proportional to 39,871.62, 55,022.58 and 21,966.21

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Solution

The fourth proportional to 39,871.62, 55,022.58 and 21,966.21 is: 30,313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.62 : 55,022.58 = 21,966.21 : x
  2. Step 2: Convert to fraction form
    39,871.62/55,022.58 = 21,966.21/x
  3. Step 3: Cross multiply
    39,871.62x = 55,022.58 × 21,966.21
  4. Step 4: Simplify right side
    39,871.62x = 1,208,637,547.02
  5. Step 5: Solve for x
    x = 1,208,637,547.02/39,871.62
  6. Step 6: Final answer
    x = 30,313.23

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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.