Home / 15,611.22-21,542.69-9,643.41

Finding the Fourth Proportional to 15,611.22, 21,542.69 and 9,643.41

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Solution

The fourth proportional to 15,611.22, 21,542.69 and 9,643.41 is: 13,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.22 : 21,542.69 = 9,643.41 : x
  2. Step 2: Convert to fraction form
    15,611.22/21,542.69 = 9,643.41/x
  3. Step 3: Cross multiply
    15,611.22x = 21,542.69 × 9,643.41
  4. Step 4: Simplify right side
    15,611.22x = 207,745,016.28
  5. Step 5: Solve for x
    x = 207,745,016.28/15,611.22
  6. Step 6: Final answer
    x = 13,307.42

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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.