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Finding the Fourth Proportional to 35,156.08, 52,717.08 and 12,979.90

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Solution

The fourth proportional to 35,156.08, 52,717.08 and 12,979.90 is: 19,463.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,156.08 : 52,717.08 = 12,979.90 : x
  2. Step 2: Convert to fraction form
    35,156.08/52,717.08 = 12,979.90/x
  3. Step 3: Cross multiply
    35,156.08x = 52,717.08 × 12,979.90
  4. Step 4: Simplify right side
    35,156.08x = 684,262,426.69
  5. Step 5: Solve for x
    x = 684,262,426.69/35,156.08
  6. Step 6: Final answer
    x = 19,463.56

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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.