Home / 21,260.88-31,894.56-10,869.12

Finding the Fourth Proportional to 21,260.88, 31,894.56 and 10,869.12

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Solution

The fourth proportional to 21,260.88, 31,894.56 and 10,869.12 is: 16,305.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.88 : 31,894.56 = 10,869.12 : x
  2. Step 2: Convert to fraction form
    21,260.88/31,894.56 = 10,869.12/x
  3. Step 3: Cross multiply
    21,260.88x = 31,894.56 × 10,869.12
  4. Step 4: Simplify right side
    21,260.88x = 346,665,799.99
  5. Step 5: Solve for x
    x = 346,665,799.99/21,260.88
  6. Step 6: Final answer
    x = 16,305.34

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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.