Home / 39,897.84-55,059.40-21,993.49

Finding the Fourth Proportional to 39,897.84, 55,059.40 and 21,993.49

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Solution

The fourth proportional to 39,897.84, 55,059.40 and 21,993.49 is: 30,351.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.84 : 55,059.40 = 21,993.49 : x
  2. Step 2: Convert to fraction form
    39,897.84/55,059.40 = 21,993.49/x
  3. Step 3: Cross multiply
    39,897.84x = 55,059.40 × 21,993.49
  4. Step 4: Simplify right side
    39,897.84x = 1,210,948,335.91
  5. Step 5: Solve for x
    x = 1,210,948,335.91/39,897.84
  6. Step 6: Final answer
    x = 30,351.22

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1.5x scale

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.