Home / 39,859.13-55,008.09-21,954.14

Finding the Fourth Proportional to 39,859.13, 55,008.09 and 21,954.14

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Solution

The fourth proportional to 39,859.13, 55,008.09 and 21,954.14 is: 30,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.13 : 55,008.09 = 21,954.14 : x
  2. Step 2: Convert to fraction form
    39,859.13/55,008.09 = 21,954.14/x
  3. Step 3: Cross multiply
    39,859.13x = 55,008.09 × 21,954.14
  4. Step 4: Simplify right side
    39,859.13x = 1,207,655,033.95
  5. Step 5: Solve for x
    x = 1,207,655,033.95/39,859.13
  6. Step 6: Final answer
    x = 30,298.08

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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.