Home / 15,470.32-21,348.92-8,396.58

Finding the Fourth Proportional to 15,470.32, 21,348.92 and 8,396.58

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Solution

The fourth proportional to 15,470.32, 21,348.92 and 8,396.58 is: 11,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.32 : 21,348.92 = 8,396.58 : x
  2. Step 2: Convert to fraction form
    15,470.32/21,348.92 = 8,396.58/x
  3. Step 3: Cross multiply
    15,470.32x = 21,348.92 × 8,396.58
  4. Step 4: Simplify right side
    15,470.32x = 179,257,914.69
  5. Step 5: Solve for x
    x = 179,257,914.69/15,470.32
  6. Step 6: Final answer
    x = 11,587.21

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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.