Home / 15,561.59-21,474.62-9,511.80

Finding the Fourth Proportional to 15,561.59, 21,474.62 and 9,511.80

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Solution

The fourth proportional to 15,561.59, 21,474.62 and 9,511.80 is: 13,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.59 : 21,474.62 = 9,511.80 : x
  2. Step 2: Convert to fraction form
    15,561.59/21,474.62 = 9,511.80/x
  3. Step 3: Cross multiply
    15,561.59x = 21,474.62 × 9,511.80
  4. Step 4: Simplify right side
    15,561.59x = 204,262,198.10
  5. Step 5: Solve for x
    x = 204,262,198.10/15,561.59
  6. Step 6: Final answer
    x = 13,126.05

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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.