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Finding the Fourth Proportional to 13,652.32, 18,834.48 and 8,345.44

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Solution

The fourth proportional to 13,652.32, 18,834.48 and 8,345.44 is: 11,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652.32 : 18,834.48 = 8,345.44 : x
  2. Step 2: Convert to fraction form
    13,652.32/18,834.48 = 8,345.44/x
  3. Step 3: Cross multiply
    13,652.32x = 18,834.48 × 8,345.44
  4. Step 4: Simplify right side
    13,652.32x = 157,182,022.77
  5. Step 5: Solve for x
    x = 157,182,022.77/13,652.32
  6. Step 6: Final answer
    x = 11,513.21

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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.