Home / 19,665.72-29,499.30-8,557.20

Finding the Fourth Proportional to 19,665.72, 29,499.30 and 8,557.20

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Solution

The fourth proportional to 19,665.72, 29,499.30 and 8,557.20 is: 12,836.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,665.72 : 29,499.30 = 8,557.20 : x
  2. Step 2: Convert to fraction form
    19,665.72/29,499.30 = 8,557.20/x
  3. Step 3: Cross multiply
    19,665.72x = 29,499.30 × 8,557.20
  4. Step 4: Simplify right side
    19,665.72x = 252,431,409.96
  5. Step 5: Solve for x
    x = 252,431,409.96/19,665.72
  6. Step 6: Final answer
    x = 12,836.11

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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.