Home / 15,032.05-20,743.49-8,317.55

Finding the Fourth Proportional to 15,032.05, 20,743.49 and 8,317.55

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Solution

The fourth proportional to 15,032.05, 20,743.49 and 8,317.55 is: 11,477.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.05 : 20,743.49 = 8,317.55 : x
  2. Step 2: Convert to fraction form
    15,032.05/20,743.49 = 8,317.55/x
  3. Step 3: Cross multiply
    15,032.05x = 20,743.49 × 8,317.55
  4. Step 4: Simplify right side
    15,032.05x = 172,535,087.90
  5. Step 5: Solve for x
    x = 172,535,087.90/15,032.05
  6. Step 6: Final answer
    x = 11,477.82

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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.