Home / 15,530.18-21,433.44-8,815.18

Finding the Fourth Proportional to 15,530.18, 21,433.44 and 8,815.18

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Solution

The fourth proportional to 15,530.18, 21,433.44 and 8,815.18 is: 12,165.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.18 : 21,433.44 = 8,815.18 : x
  2. Step 2: Convert to fraction form
    15,530.18/21,433.44 = 8,815.18/x
  3. Step 3: Cross multiply
    15,530.18x = 21,433.44 × 8,815.18
  4. Step 4: Simplify right side
    15,530.18x = 188,939,651.28
  5. Step 5: Solve for x
    x = 188,939,651.28/15,530.18
  6. Step 6: Final answer
    x = 12,165.97

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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.