Home / 28,448.88-39,250.26-15,871.20

Finding the Fourth Proportional to 28,448.88, 39,250.26 and 15,871.20

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Solution

The fourth proportional to 28,448.88, 39,250.26 and 15,871.20 is: 21,897.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,448.88 : 39,250.26 = 15,871.20 : x
  2. Step 2: Convert to fraction form
    28,448.88/39,250.26 = 15,871.20/x
  3. Step 3: Cross multiply
    28,448.88x = 39,250.26 × 15,871.20
  4. Step 4: Simplify right side
    28,448.88x = 622,948,726.51
  5. Step 5: Solve for x
    x = 622,948,726.51/28,448.88
  6. Step 6: Final answer
    x = 21,897.13

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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.