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Finding the Fourth Proportional to 12,355.92, 17,051.18 and 6,690.68

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Solution

The fourth proportional to 12,355.92, 17,051.18 and 6,690.68 is: 9,233.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.92 : 17,051.18 = 6,690.68 : x
  2. Step 2: Convert to fraction form
    12,355.92/17,051.18 = 6,690.68/x
  3. Step 3: Cross multiply
    12,355.92x = 17,051.18 × 6,690.68
  4. Step 4: Simplify right side
    12,355.92x = 114,083,870.29
  5. Step 5: Solve for x
    x = 114,083,870.29/12,355.92
  6. Step 6: Final answer
    x = 9,233.13

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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.