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Finding the Fourth Proportional to 12,445.84, 17,175.90 and 6,856.84

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Solution

The fourth proportional to 12,445.84, 17,175.90 and 6,856.84 is: 9,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.84 : 17,175.90 = 6,856.84 : x
  2. Step 2: Convert to fraction form
    12,445.84/17,175.90 = 6,856.84/x
  3. Step 3: Cross multiply
    12,445.84x = 17,175.90 × 6,856.84
  4. Step 4: Simplify right side
    12,445.84x = 117,772,398.16
  5. Step 5: Solve for x
    x = 117,772,398.16/12,445.84
  6. Step 6: Final answer
    x = 9,462.79

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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.