Home / 15,409.75-21,265.43-8,336.17

Finding the Fourth Proportional to 15,409.75, 21,265.43 and 8,336.17

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Solution

The fourth proportional to 15,409.75, 21,265.43 and 8,336.17 is: 11,503.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.75 : 21,265.43 = 8,336.17 : x
  2. Step 2: Convert to fraction form
    15,409.75/21,265.43 = 8,336.17/x
  3. Step 3: Cross multiply
    15,409.75x = 21,265.43 × 8,336.17
  4. Step 4: Simplify right side
    15,409.75x = 177,272,239.60
  5. Step 5: Solve for x
    x = 177,272,239.60/15,409.75
  6. Step 6: Final answer
    x = 11,503.90

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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.