Home / 15,409.68-21,265.34-8,336.08

Finding the Fourth Proportional to 15,409.68, 21,265.34 and 8,336.08

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Solution

The fourth proportional to 15,409.68, 21,265.34 and 8,336.08 is: 11,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.68 : 21,265.34 = 8,336.08 : x
  2. Step 2: Convert to fraction form
    15,409.68/21,265.34 = 8,336.08/x
  3. Step 3: Cross multiply
    15,409.68x = 21,265.34 × 8,336.08
  4. Step 4: Simplify right side
    15,409.68x = 177,269,575.47
  5. Step 5: Solve for x
    x = 177,269,575.47/15,409.68
  6. Step 6: Final answer
    x = 11,503.78

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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.