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Finding the Fourth Proportional to 12,393.66, 17,102.79 and 7,088.34

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Solution

The fourth proportional to 12,393.66, 17,102.79 and 7,088.34 is: 9,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.66 : 17,102.79 = 7,088.34 : x
  2. Step 2: Convert to fraction form
    12,393.66/17,102.79 = 7,088.34/x
  3. Step 3: Cross multiply
    12,393.66x = 17,102.79 × 7,088.34
  4. Step 4: Simplify right side
    12,393.66x = 121,230,390.47
  5. Step 5: Solve for x
    x = 121,230,390.47/12,393.66
  6. Step 6: Final answer
    x = 9,781.65

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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.