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Finding the Fourth Proportional to 19,891.66, 29,832.86 and 8,792.30

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Solution

The fourth proportional to 19,891.66, 29,832.86 and 8,792.30 is: 13,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.66 : 29,832.86 = 8,792.30 : x
  2. Step 2: Convert to fraction form
    19,891.66/29,832.86 = 8,792.30/x
  3. Step 3: Cross multiply
    19,891.66x = 29,832.86 × 8,792.30
  4. Step 4: Simplify right side
    19,891.66x = 262,299,454.98
  5. Step 5: Solve for x
    x = 262,299,454.98/19,891.66
  6. Step 6: Final answer
    x = 13,186.40

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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.