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Finding the Fourth Proportional to 12,493.31, 18,746.04 and 5,911.66

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Solution

The fourth proportional to 12,493.31, 18,746.04 and 5,911.66 is: 8,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.31 : 18,746.04 = 5,911.66 : x
  2. Step 2: Convert to fraction form
    12,493.31/18,746.04 = 5,911.66/x
  3. Step 3: Cross multiply
    12,493.31x = 18,746.04 × 5,911.66
  4. Step 4: Simplify right side
    12,493.31x = 110,820,121.10
  5. Step 5: Solve for x
    x = 110,820,121.10/12,493.31
  6. Step 6: Final answer
    x = 8,870.36

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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.