Home / 21,697.90-29,938.24-13,204.46

Finding the Fourth Proportional to 21,697.90, 29,938.24 and 13,204.46

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Solution

The fourth proportional to 21,697.90, 29,938.24 and 13,204.46 is: 18,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,697.90 : 29,938.24 = 13,204.46 : x
  2. Step 2: Convert to fraction form
    21,697.90/29,938.24 = 13,204.46/x
  3. Step 3: Cross multiply
    21,697.90x = 29,938.24 × 13,204.46
  4. Step 4: Simplify right side
    21,697.90x = 395,318,292.55
  5. Step 5: Solve for x
    x = 395,318,292.55/21,697.90
  6. Step 6: Final answer
    x = 18,219.20

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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.