Home / 21,292.38-31,908.45-11,808.90

Finding the Fourth Proportional to 21,292.38, 31,908.45 and 11,808.90

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Solution

The fourth proportional to 21,292.38, 31,908.45 and 11,808.90 is: 17,696.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.38 : 31,908.45 = 11,808.90 : x
  2. Step 2: Convert to fraction form
    21,292.38/31,908.45 = 11,808.90/x
  3. Step 3: Cross multiply
    21,292.38x = 31,908.45 × 11,808.90
  4. Step 4: Simplify right side
    21,292.38x = 376,803,695.21
  5. Step 5: Solve for x
    x = 376,803,695.21/21,292.38
  6. Step 6: Final answer
    x = 17,696.65

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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.