Home / 12,612.13-17,398.89-8,137.32

Finding the Fourth Proportional to 12,612.13, 17,398.89 and 8,137.32

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Solution

The fourth proportional to 12,612.13, 17,398.89 and 8,137.32 is: 11,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.13 : 17,398.89 = 8,137.32 : x
  2. Step 2: Convert to fraction form
    12,612.13/17,398.89 = 8,137.32/x
  3. Step 3: Cross multiply
    12,612.13x = 17,398.89 × 8,137.32
  4. Step 4: Simplify right side
    12,612.13x = 141,580,335.57
  5. Step 5: Solve for x
    x = 141,580,335.57/12,612.13
  6. Step 6: Final answer
    x = 11,225.73

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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.