Home / 21,904.02-30,238.92-13,418.46

Finding the Fourth Proportional to 21,904.02, 30,238.92 and 13,418.46

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Solution

The fourth proportional to 21,904.02, 30,238.92 and 13,418.46 is: 18,524.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.02 : 30,238.92 = 13,418.46 : x
  2. Step 2: Convert to fraction form
    21,904.02/30,238.92 = 13,418.46/x
  3. Step 3: Cross multiply
    21,904.02x = 30,238.92 × 13,418.46
  4. Step 4: Simplify right side
    21,904.02x = 405,759,738.46
  5. Step 5: Solve for x
    x = 405,759,738.46/21,904.02
  6. Step 6: Final answer
    x = 18,524.44

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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.