Home / 21,176.22-29,204.06-13,219.18

Finding the Fourth Proportional to 21,176.22, 29,204.06 and 13,219.18

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Solution

The fourth proportional to 21,176.22, 29,204.06 and 13,219.18 is: 18,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.22 : 29,204.06 = 13,219.18 : x
  2. Step 2: Convert to fraction form
    21,176.22/29,204.06 = 13,219.18/x
  3. Step 3: Cross multiply
    21,176.22x = 29,204.06 × 13,219.18
  4. Step 4: Simplify right side
    21,176.22x = 386,053,725.87
  5. Step 5: Solve for x
    x = 386,053,725.87/21,176.22
  6. Step 6: Final answer
    x = 18,230.53

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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.