Home / 15,409.48-21,257.94-9,741.64

Finding the Fourth Proportional to 15,409.48, 21,257.94 and 9,741.64

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Solution

The fourth proportional to 15,409.48, 21,257.94 and 9,741.64 is: 13,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.48 : 21,257.94 = 9,741.64 : x
  2. Step 2: Convert to fraction form
    15,409.48/21,257.94 = 9,741.64/x
  3. Step 3: Cross multiply
    15,409.48x = 21,257.94 × 9,741.64
  4. Step 4: Simplify right side
    15,409.48x = 207,087,198.62
  5. Step 5: Solve for x
    x = 207,087,198.62/15,409.48
  6. Step 6: Final answer
    x = 13,438.95

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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.