Home / 31,521.78-43,500.05-17,181.63

Finding the Fourth Proportional to 31,521.78, 43,500.05 and 17,181.63

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Solution

The fourth proportional to 31,521.78, 43,500.05 and 17,181.63 is: 23,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521.78 : 43,500.05 = 17,181.63 : x
  2. Step 2: Convert to fraction form
    31,521.78/43,500.05 = 17,181.63/x
  3. Step 3: Cross multiply
    31,521.78x = 43,500.05 × 17,181.63
  4. Step 4: Simplify right side
    31,521.78x = 747,401,742.60
  5. Step 5: Solve for x
    x = 747,401,742.60/31,521.78
  6. Step 6: Final answer
    x = 23,710.65

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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.