Home / 21,201.04-29,153.68-18,401.68

Finding the Fourth Proportional to 21,201.04, 29,153.68 and 18,401.68

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Solution

The fourth proportional to 21,201.04, 29,153.68 and 18,401.68 is: 25,304.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.04 : 29,153.68 = 18,401.68 : x
  2. Step 2: Convert to fraction form
    21,201.04/29,153.68 = 18,401.68/x
  3. Step 3: Cross multiply
    21,201.04x = 29,153.68 × 18,401.68
  4. Step 4: Simplify right side
    21,201.04x = 536,476,690.18
  5. Step 5: Solve for x
    x = 536,476,690.18/21,201.04
  6. Step 6: Final answer
    x = 25,304.26

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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.