Home / 21,222.64-31,788.51-11,195.71

Finding the Fourth Proportional to 21,222.64, 31,788.51 and 11,195.71

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Solution

The fourth proportional to 21,222.64, 31,788.51 and 11,195.71 is: 16,769.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.64 : 31,788.51 = 11,195.71 : x
  2. Step 2: Convert to fraction form
    21,222.64/31,788.51 = 11,195.71/x
  3. Step 3: Cross multiply
    21,222.64x = 31,788.51 × 11,195.71
  4. Step 4: Simplify right side
    21,222.64x = 355,894,939.29
  5. Step 5: Solve for x
    x = 355,894,939.29/21,222.64
  6. Step 6: Final answer
    x = 16,769.59

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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.