Home / 15,565.07-21,479.79-8,850.53

Finding the Fourth Proportional to 15,565.07, 21,479.79 and 8,850.53

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Solution

The fourth proportional to 15,565.07, 21,479.79 and 8,850.53 is: 12,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.07 : 21,479.79 = 8,850.53 : x
  2. Step 2: Convert to fraction form
    15,565.07/21,479.79 = 8,850.53/x
  3. Step 3: Cross multiply
    15,565.07x = 21,479.79 × 8,850.53
  4. Step 4: Simplify right side
    15,565.07x = 190,107,418.39
  5. Step 5: Solve for x
    x = 190,107,418.39/15,565.07
  6. Step 6: Final answer
    x = 12,213.72

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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.