Home / 19,428.66-29,172.15-11,118.06

Finding the Fourth Proportional to 19,428.66, 29,172.15 and 11,118.06

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Solution

The fourth proportional to 19,428.66, 29,172.15 and 11,118.06 is: 16,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.66 : 29,172.15 = 11,118.06 : x
  2. Step 2: Convert to fraction form
    19,428.66/29,172.15 = 11,118.06/x
  3. Step 3: Cross multiply
    19,428.66x = 29,172.15 × 11,118.06
  4. Step 4: Simplify right side
    19,428.66x = 324,337,714.03
  5. Step 5: Solve for x
    x = 324,337,714.03/19,428.66
  6. Step 6: Final answer
    x = 16,693.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.