Home / 21,826.61-32,556.31-21,170.69

Finding the Fourth Proportional to 21,826.61, 32,556.31 and 21,170.69

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Solution

The fourth proportional to 21,826.61, 32,556.31 and 21,170.69 is: 31,577.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,826.61 : 32,556.31 = 21,170.69 : x
  2. Step 2: Convert to fraction form
    21,826.61/32,556.31 = 21,170.69/x
  3. Step 3: Cross multiply
    21,826.61x = 32,556.31 × 21,170.69
  4. Step 4: Simplify right side
    21,826.61x = 689,239,440.70
  5. Step 5: Solve for x
    x = 689,239,440.70/21,826.61
  6. Step 6: Final answer
    x = 31,577.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.