Home / 15,022.54-20,730.47-8,216.45

Finding the Fourth Proportional to 15,022.54, 20,730.47 and 8,216.45

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Solution

The fourth proportional to 15,022.54, 20,730.47 and 8,216.45 is: 11,338.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.54 : 20,730.47 = 8,216.45 : x
  2. Step 2: Convert to fraction form
    15,022.54/20,730.47 = 8,216.45/x
  3. Step 3: Cross multiply
    15,022.54x = 20,730.47 × 8,216.45
  4. Step 4: Simplify right side
    15,022.54x = 170,330,766.58
  5. Step 5: Solve for x
    x = 170,330,766.58/15,022.54
  6. Step 6: Final answer
    x = 11,338.35

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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.