Home / 21,764.14-30,023.05-13,264.20

Finding the Fourth Proportional to 21,764.14, 30,023.05 and 13,264.20

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Solution

The fourth proportional to 21,764.14, 30,023.05 and 13,264.20 is: 18,297.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.14 : 30,023.05 = 13,264.20 : x
  2. Step 2: Convert to fraction form
    21,764.14/30,023.05 = 13,264.20/x
  3. Step 3: Cross multiply
    21,764.14x = 30,023.05 × 13,264.20
  4. Step 4: Simplify right side
    21,764.14x = 398,231,739.81
  5. Step 5: Solve for x
    x = 398,231,739.81/21,764.14
  6. Step 6: Final answer
    x = 18,297.61

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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.