Home / 15,634.56-21,561.10-9,963.39

Finding the Fourth Proportional to 15,634.56, 21,561.10 and 9,963.39

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Solution

The fourth proportional to 15,634.56, 21,561.10 and 9,963.39 is: 13,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,634.56 : 21,561.10 = 9,963.39 : x
  2. Step 2: Convert to fraction form
    15,634.56/21,561.10 = 9,963.39/x
  3. Step 3: Cross multiply
    15,634.56x = 21,561.10 × 9,963.39
  4. Step 4: Simplify right side
    15,634.56x = 214,821,648.13
  5. Step 5: Solve for x
    x = 214,821,648.13/15,634.56
  6. Step 6: Final answer
    x = 13,740.18

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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.