Home / 20,851.03-31,297.62-18,494.56

Finding the Fourth Proportional to 20,851.03, 31,297.62 and 18,494.56

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Solution

The fourth proportional to 20,851.03, 31,297.62 and 18,494.56 is: 27,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.03 : 31,297.62 = 18,494.56 : x
  2. Step 2: Convert to fraction form
    20,851.03/31,297.62 = 18,494.56/x
  3. Step 3: Cross multiply
    20,851.03x = 31,297.62 × 18,494.56
  4. Step 4: Simplify right side
    20,851.03x = 578,835,710.95
  5. Step 5: Solve for x
    x = 578,835,710.95/20,851.03
  6. Step 6: Final answer
    x = 27,760.53

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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.