Home / 15,371.70-21,213.97-8,566.77

Finding the Fourth Proportional to 15,371.70, 21,213.97 and 8,566.77

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Solution

The fourth proportional to 15,371.70, 21,213.97 and 8,566.77 is: 11,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.70 : 21,213.97 = 8,566.77 : x
  2. Step 2: Convert to fraction form
    15,371.70/21,213.97 = 8,566.77/x
  3. Step 3: Cross multiply
    15,371.70x = 21,213.97 × 8,566.77
  4. Step 4: Simplify right side
    15,371.70x = 181,735,201.78
  5. Step 5: Solve for x
    x = 181,735,201.78/15,371.70
  6. Step 6: Final answer
    x = 11,822.72

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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.