Home / 28,422.87-39,223.02-15,677.22

Finding the Fourth Proportional to 28,422.87, 39,223.02 and 15,677.22

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Solution

The fourth proportional to 28,422.87, 39,223.02 and 15,677.22 is: 21,634.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.87 : 39,223.02 = 15,677.22 : x
  2. Step 2: Convert to fraction form
    28,422.87/39,223.02 = 15,677.22/x
  3. Step 3: Cross multiply
    28,422.87x = 39,223.02 × 15,677.22
  4. Step 4: Simplify right side
    28,422.87x = 614,907,913.60
  5. Step 5: Solve for x
    x = 614,907,913.60/28,422.87
  6. Step 6: Final answer
    x = 21,634.27

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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.