Home / 21,274.36-29,357.34-12,321.24

Finding the Fourth Proportional to 21,274.36, 29,357.34 and 12,321.24

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Solution

The fourth proportional to 21,274.36, 29,357.34 and 12,321.24 is: 17,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.36 : 29,357.34 = 12,321.24 : x
  2. Step 2: Convert to fraction form
    21,274.36/29,357.34 = 12,321.24/x
  3. Step 3: Cross multiply
    21,274.36x = 29,357.34 × 12,321.24
  4. Step 4: Simplify right side
    21,274.36x = 361,718,831.90
  5. Step 5: Solve for x
    x = 361,718,831.90/21,274.36
  6. Step 6: Final answer
    x = 17,002.57

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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.