Home / 15,022.10-20,730.51-8,216.21

Finding the Fourth Proportional to 15,022.10, 20,730.51 and 8,216.21

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Solution

The fourth proportional to 15,022.10, 20,730.51 and 8,216.21 is: 11,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.10 : 20,730.51 = 8,216.21 : x
  2. Step 2: Convert to fraction form
    15,022.10/20,730.51 = 8,216.21/x
  3. Step 3: Cross multiply
    15,022.10x = 20,730.51 × 8,216.21
  4. Step 4: Simplify right side
    15,022.10x = 170,326,119.91
  5. Step 5: Solve for x
    x = 170,326,119.91/15,022.10
  6. Step 6: Final answer
    x = 11,338.37

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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.