Home / 20,317.52-28,035.66-11,362.78

Finding the Fourth Proportional to 20,317.52, 28,035.66 and 11,362.78

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Solution

The fourth proportional to 20,317.52, 28,035.66 and 11,362.78 is: 15,679.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.52 : 28,035.66 = 11,362.78 : x
  2. Step 2: Convert to fraction form
    20,317.52/28,035.66 = 11,362.78/x
  3. Step 3: Cross multiply
    20,317.52x = 28,035.66 × 11,362.78
  4. Step 4: Simplify right side
    20,317.52x = 318,563,036.73
  5. Step 5: Solve for x
    x = 318,563,036.73/20,317.52
  6. Step 6: Final answer
    x = 15,679.23

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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.