Home / 21,440.66-29,581.22-13,892.80

Finding the Fourth Proportional to 21,440.66, 29,581.22 and 13,892.80

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Solution

The fourth proportional to 21,440.66, 29,581.22 and 13,892.80 is: 19,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.66 : 29,581.22 = 13,892.80 : x
  2. Step 2: Convert to fraction form
    21,440.66/29,581.22 = 13,892.80/x
  3. Step 3: Cross multiply
    21,440.66x = 29,581.22 × 13,892.80
  4. Step 4: Simplify right side
    21,440.66x = 410,965,973.22
  5. Step 5: Solve for x
    x = 410,965,973.22/21,440.66
  6. Step 6: Final answer
    x = 19,167.60

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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.