Home / 21,824.88-30,118.55-12,393.51

Finding the Fourth Proportional to 21,824.88, 30,118.55 and 12,393.51

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Solution

The fourth proportional to 21,824.88, 30,118.55 and 12,393.51 is: 17,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.88 : 30,118.55 = 12,393.51 : x
  2. Step 2: Convert to fraction form
    21,824.88/30,118.55 = 12,393.51/x
  3. Step 3: Cross multiply
    21,824.88x = 30,118.55 × 12,393.51
  4. Step 4: Simplify right side
    21,824.88x = 373,274,488.64
  5. Step 5: Solve for x
    x = 373,274,488.64/21,824.88
  6. Step 6: Final answer
    x = 17,103.16

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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.