Home / 21,181.80-31,788.92-15,255.84

Finding the Fourth Proportional to 21,181.80, 31,788.92 and 15,255.84

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Solution

The fourth proportional to 21,181.80, 31,788.92 and 15,255.84 is: 22,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.80 : 31,788.92 = 15,255.84 : x
  2. Step 2: Convert to fraction form
    21,181.80/31,788.92 = 15,255.84/x
  3. Step 3: Cross multiply
    21,181.80x = 31,788.92 × 15,255.84
  4. Step 4: Simplify right side
    21,181.80x = 484,966,677.29
  5. Step 5: Solve for x
    x = 484,966,677.29/21,181.80
  6. Step 6: Final answer
    x = 22,895.44

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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.