Home / 15,611.59-21,551.43-9,646.75

Finding the Fourth Proportional to 15,611.59, 21,551.43 and 9,646.75

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Solution

The fourth proportional to 15,611.59, 21,551.43 and 9,646.75 is: 13,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.59 : 21,551.43 = 9,646.75 : x
  2. Step 2: Convert to fraction form
    15,611.59/21,551.43 = 9,646.75/x
  3. Step 3: Cross multiply
    15,611.59x = 21,551.43 × 9,646.75
  4. Step 4: Simplify right side
    15,611.59x = 207,901,257.35
  5. Step 5: Solve for x
    x = 207,901,257.35/15,611.59
  6. Step 6: Final answer
    x = 13,317.11

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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.