Home / 15,578.69-21,497.78-8,503.75

Finding the Fourth Proportional to 15,578.69, 21,497.78 and 8,503.75

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Solution

The fourth proportional to 15,578.69, 21,497.78 and 8,503.75 is: 11,734.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.69 : 21,497.78 = 8,503.75 : x
  2. Step 2: Convert to fraction form
    15,578.69/21,497.78 = 8,503.75/x
  3. Step 3: Cross multiply
    15,578.69x = 21,497.78 × 8,503.75
  4. Step 4: Simplify right side
    15,578.69x = 182,811,714.19
  5. Step 5: Solve for x
    x = 182,811,714.19/15,578.69
  6. Step 6: Final answer
    x = 11,734.73

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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.