Home / 15,609.18-21,540.69-8,803.29

Finding the Fourth Proportional to 15,609.18, 21,540.69 and 8,803.29

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Solution

The fourth proportional to 15,609.18, 21,540.69 and 8,803.29 is: 12,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.18 : 21,540.69 = 8,803.29 : x
  2. Step 2: Convert to fraction form
    15,609.18/21,540.69 = 8,803.29/x
  3. Step 3: Cross multiply
    15,609.18x = 21,540.69 × 8,803.29
  4. Step 4: Simplify right side
    15,609.18x = 189,628,940.87
  5. Step 5: Solve for x
    x = 189,628,940.87/15,609.18
  6. Step 6: Final answer
    x = 12,148.55

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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.