Home / 15,556.50-21,471.32-9,180.72

Finding the Fourth Proportional to 15,556.50, 21,471.32 and 9,180.72

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Solution

The fourth proportional to 15,556.50, 21,471.32 and 9,180.72 is: 12,671.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,556.50 : 21,471.32 = 9,180.72 : x
  2. Step 2: Convert to fraction form
    15,556.50/21,471.32 = 9,180.72/x
  3. Step 3: Cross multiply
    15,556.50x = 21,471.32 × 9,180.72
  4. Step 4: Simplify right side
    15,556.50x = 197,122,176.95
  5. Step 5: Solve for x
    x = 197,122,176.95/15,556.50
  6. Step 6: Final answer
    x = 12,671.37

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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.