Home / 15,409.72-21,265.56-8,336.30

Finding the Fourth Proportional to 15,409.72, 21,265.56 and 8,336.30

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Solution

The fourth proportional to 15,409.72, 21,265.56 and 8,336.30 is: 11,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.72 : 21,265.56 = 8,336.30 : x
  2. Step 2: Convert to fraction form
    15,409.72/21,265.56 = 8,336.30/x
  3. Step 3: Cross multiply
    15,409.72x = 21,265.56 × 8,336.30
  4. Step 4: Simplify right side
    15,409.72x = 177,276,087.83
  5. Step 5: Solve for x
    x = 177,276,087.83/15,409.72
  6. Step 6: Final answer
    x = 11,504.17

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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.