Home / 28,422.88-39,223.04-15,677.25

Finding the Fourth Proportional to 28,422.88, 39,223.04 and 15,677.25

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Solution

The fourth proportional to 28,422.88, 39,223.04 and 15,677.25 is: 21,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.88 : 39,223.04 = 15,677.25 : x
  2. Step 2: Convert to fraction form
    28,422.88/39,223.04 = 15,677.25/x
  3. Step 3: Cross multiply
    28,422.88x = 39,223.04 × 15,677.25
  4. Step 4: Simplify right side
    28,422.88x = 614,909,403.84
  5. Step 5: Solve for x
    x = 614,909,403.84/28,422.88
  6. Step 6: Final answer
    x = 21,634.31

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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.