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Finding the Fourth Proportional to 12,617.48, 18,837.48 and 9,640.32

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Solution

The fourth proportional to 12,617.48, 18,837.48 and 9,640.32 is: 14,392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.48 : 18,837.48 = 9,640.32 : x
  2. Step 2: Convert to fraction form
    12,617.48/18,837.48 = 9,640.32/x
  3. Step 3: Cross multiply
    12,617.48x = 18,837.48 × 9,640.32
  4. Step 4: Simplify right side
    12,617.48x = 181,599,335.19
  5. Step 5: Solve for x
    x = 181,599,335.19/12,617.48
  6. Step 6: Final answer
    x = 14,392.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.