Home / 21,341.64-29,441.16-13,380.96

Finding the Fourth Proportional to 21,341.64, 29,441.16 and 13,380.96

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Solution

The fourth proportional to 21,341.64, 29,441.16 and 13,380.96 is: 18,459.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.64 : 29,441.16 = 13,380.96 : x
  2. Step 2: Convert to fraction form
    21,341.64/29,441.16 = 13,380.96/x
  3. Step 3: Cross multiply
    21,341.64x = 29,441.16 × 13,380.96
  4. Step 4: Simplify right side
    21,341.64x = 393,950,984.31
  5. Step 5: Solve for x
    x = 393,950,984.31/21,341.64
  6. Step 6: Final answer
    x = 18,459.26

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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.