Home / 21,920.63-30,255.93-12,494.66

Finding the Fourth Proportional to 21,920.63, 30,255.93 and 12,494.66

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Solution

The fourth proportional to 21,920.63, 30,255.93 and 12,494.66 is: 17,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.63 : 30,255.93 = 12,494.66 : x
  2. Step 2: Convert to fraction form
    21,920.63/30,255.93 = 12,494.66/x
  3. Step 3: Cross multiply
    21,920.63x = 30,255.93 × 12,494.66
  4. Step 4: Simplify right side
    21,920.63x = 378,037,407.05
  5. Step 5: Solve for x
    x = 378,037,407.05/21,920.63
  6. Step 6: Final answer
    x = 17,245.74

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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.