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Finding the Fourth Proportional to 35,117.61, 52,651.82 and 12,928.11

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Solution

The fourth proportional to 35,117.61, 52,651.82 and 12,928.11 is: 19,383.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,117.61 : 52,651.82 = 12,928.11 : x
  2. Step 2: Convert to fraction form
    35,117.61/52,651.82 = 12,928.11/x
  3. Step 3: Cross multiply
    35,117.61x = 52,651.82 × 12,928.11
  4. Step 4: Simplify right side
    35,117.61x = 680,688,456.02
  5. Step 5: Solve for x
    x = 680,688,456.02/35,117.61
  6. Step 6: Final answer
    x = 19,383.11

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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.