Home / 13,921.57-20,835.97-11,135.17

Finding the Fourth Proportional to 13,921.57, 20,835.97 and 11,135.17

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Solution

The fourth proportional to 13,921.57, 20,835.97 and 11,135.17 is: 16,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.57 : 20,835.97 = 11,135.17 : x
  2. Step 2: Convert to fraction form
    13,921.57/20,835.97 = 11,135.17/x
  3. Step 3: Cross multiply
    13,921.57x = 20,835.97 × 11,135.17
  4. Step 4: Simplify right side
    13,921.57x = 232,012,068.06
  5. Step 5: Solve for x
    x = 232,012,068.06/13,921.57
  6. Step 6: Final answer
    x = 16,665.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.