Home / 15,409.38-21,264.96-8,335.79

Finding the Fourth Proportional to 15,409.38, 21,264.96 and 8,335.79

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Solution

The fourth proportional to 15,409.38, 21,264.96 and 8,335.79 is: 11,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.38 : 21,264.96 = 8,335.79 : x
  2. Step 2: Convert to fraction form
    15,409.38/21,264.96 = 8,335.79/x
  3. Step 3: Cross multiply
    15,409.38x = 21,264.96 × 8,335.79
  4. Step 4: Simplify right side
    15,409.38x = 177,260,240.92
  5. Step 5: Solve for x
    x = 177,260,240.92/15,409.38
  6. Step 6: Final answer
    x = 11,503.40

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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.