Home / 21,154.56-29,183.89-13,599.48

Finding the Fourth Proportional to 21,154.56, 29,183.89 and 13,599.48

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Solution

The fourth proportional to 21,154.56, 29,183.89 and 13,599.48 is: 18,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.56 : 29,183.89 = 13,599.48 : x
  2. Step 2: Convert to fraction form
    21,154.56/29,183.89 = 13,599.48/x
  3. Step 3: Cross multiply
    21,154.56x = 29,183.89 × 13,599.48
  4. Step 4: Simplify right side
    21,154.56x = 396,885,728.38
  5. Step 5: Solve for x
    x = 396,885,728.38/21,154.56
  6. Step 6: Final answer
    x = 18,761.24

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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.