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Finding the Fourth Proportional to 17,787.19, 24,549.77 and 11,421.86

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Solution

The fourth proportional to 17,787.19, 24,549.77 and 11,421.86 is: 15,764.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,787.19 : 24,549.77 = 11,421.86 : x
  2. Step 2: Convert to fraction form
    17,787.19/24,549.77 = 11,421.86/x
  3. Step 3: Cross multiply
    17,787.19x = 24,549.77 × 11,421.86
  4. Step 4: Simplify right side
    17,787.19x = 280,403,856.11
  5. Step 5: Solve for x
    x = 280,403,856.11/17,787.19
  6. Step 6: Final answer
    x = 15,764.37

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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.