Home / 20,535.48-28,313.28-17,137.38

Finding the Fourth Proportional to 20,535.48, 28,313.28 and 17,137.38

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Solution

The fourth proportional to 20,535.48, 28,313.28 and 17,137.38 is: 23,628.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.48 : 28,313.28 = 17,137.38 : x
  2. Step 2: Convert to fraction form
    20,535.48/28,313.28 = 17,137.38/x
  3. Step 3: Cross multiply
    20,535.48x = 28,313.28 × 17,137.38
  4. Step 4: Simplify right side
    20,535.48x = 485,215,438.41
  5. Step 5: Solve for x
    x = 485,215,438.41/20,535.48
  6. Step 6: Final answer
    x = 23,628.15

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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.