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Finding the Fourth Proportional to 14,398.92, 19,865.07 and 8,731.62

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Solution

The fourth proportional to 14,398.92, 19,865.07 and 8,731.62 is: 12,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,398.92 : 19,865.07 = 8,731.62 : x
  2. Step 2: Convert to fraction form
    14,398.92/19,865.07 = 8,731.62/x
  3. Step 3: Cross multiply
    14,398.92x = 19,865.07 × 8,731.62
  4. Step 4: Simplify right side
    14,398.92x = 173,454,242.51
  5. Step 5: Solve for x
    x = 173,454,242.51/14,398.92
  6. Step 6: Final answer
    x = 12,046.34

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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.