Home / 21,372.66-29,492.30-13,401.05

Finding the Fourth Proportional to 21,372.66, 29,492.30 and 13,401.05

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Solution

The fourth proportional to 21,372.66, 29,492.30 and 13,401.05 is: 18,492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.66 : 29,492.30 = 13,401.05 : x
  2. Step 2: Convert to fraction form
    21,372.66/29,492.30 = 13,401.05/x
  3. Step 3: Cross multiply
    21,372.66x = 29,492.30 × 13,401.05
  4. Step 4: Simplify right side
    21,372.66x = 395,227,672.96
  5. Step 5: Solve for x
    x = 395,227,672.96/21,372.66
  6. Step 6: Final answer
    x = 18,492.21

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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.