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Finding the Fourth Proportional to 17,934.64, 26,916 and 12,426.64

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Solution

The fourth proportional to 17,934.64, 26,916 and 12,426.64 is: 18,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,934.64 : 26,916 = 12,426.64 : x
  2. Step 2: Convert to fraction form
    17,934.64/26,916 = 12,426.64/x
  3. Step 3: Cross multiply
    17,934.64x = 26,916 × 12,426.64
  4. Step 4: Simplify right side
    17,934.64x = 334,475,442.24
  5. Step 5: Solve for x
    x = 334,475,442.24/17,934.64
  6. Step 6: Final answer
    x = 18,649.69

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1.5x scale

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.