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Finding the Fourth Proportional to 12,612.66, 17,405.55 and 6,948.06

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Solution

The fourth proportional to 12,612.66, 17,405.55 and 6,948.06 is: 9,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.66 : 17,405.55 = 6,948.06 : x
  2. Step 2: Convert to fraction form
    12,612.66/17,405.55 = 6,948.06/x
  3. Step 3: Cross multiply
    12,612.66x = 17,405.55 × 6,948.06
  4. Step 4: Simplify right side
    12,612.66x = 120,934,805.73
  5. Step 5: Solve for x
    x = 120,934,805.73/12,612.66
  6. Step 6: Final answer
    x = 9,588.37

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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.