Home / 15,032.79-20,745.05-8,318.43

Finding the Fourth Proportional to 15,032.79, 20,745.05 and 8,318.43

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Solution

The fourth proportional to 15,032.79, 20,745.05 and 8,318.43 is: 11,479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.79 : 20,745.05 = 8,318.43 : x
  2. Step 2: Convert to fraction form
    15,032.79/20,745.05 = 8,318.43/x
  3. Step 3: Cross multiply
    15,032.79x = 20,745.05 × 8,318.43
  4. Step 4: Simplify right side
    15,032.79x = 172,566,204.68
  5. Step 5: Solve for x
    x = 172,566,204.68/15,032.79
  6. Step 6: Final answer
    x = 11,479.32

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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.