Home / 15,733.72-21,712.70-8,660.32

Finding the Fourth Proportional to 15,733.72, 21,712.70 and 8,660.32

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Solution

The fourth proportional to 15,733.72, 21,712.70 and 8,660.32 is: 11,951.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.72 : 21,712.70 = 8,660.32 : x
  2. Step 2: Convert to fraction form
    15,733.72/21,712.70 = 8,660.32/x
  3. Step 3: Cross multiply
    15,733.72x = 21,712.70 × 8,660.32
  4. Step 4: Simplify right side
    15,733.72x = 188,038,930.06
  5. Step 5: Solve for x
    x = 188,038,930.06/15,733.72
  6. Step 6: Final answer
    x = 11,951.33

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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.