Home / 28,634.49-39,515.43-15,887.55

Finding the Fourth Proportional to 28,634.49, 39,515.43 and 15,887.55

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Solution

The fourth proportional to 28,634.49, 39,515.43 and 15,887.55 is: 21,924.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,634.49 : 39,515.43 = 15,887.55 : x
  2. Step 2: Convert to fraction form
    28,634.49/39,515.43 = 15,887.55/x
  3. Step 3: Cross multiply
    28,634.49x = 39,515.43 × 15,887.55
  4. Step 4: Simplify right side
    28,634.49x = 627,803,369.90
  5. Step 5: Solve for x
    x = 627,803,369.90/28,634.49
  6. Step 6: Final answer
    x = 21,924.73

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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.