Home / 15,438.44-21,305.04-8,364.80

Finding the Fourth Proportional to 15,438.44, 21,305.04 and 8,364.80

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Solution

The fourth proportional to 15,438.44, 21,305.04 and 8,364.80 is: 11,543.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.44 : 21,305.04 = 8,364.80 : x
  2. Step 2: Convert to fraction form
    15,438.44/21,305.04 = 8,364.80/x
  3. Step 3: Cross multiply
    15,438.44x = 21,305.04 × 8,364.80
  4. Step 4: Simplify right side
    15,438.44x = 178,212,398.59
  5. Step 5: Solve for x
    x = 178,212,398.59/15,438.44
  6. Step 6: Final answer
    x = 11,543.42

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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.