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Finding the Fourth Proportional to 12,383.58, 17,088.86 and 6,718.22

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Solution

The fourth proportional to 12,383.58, 17,088.86 and 6,718.22 is: 9,270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.58 : 17,088.86 = 6,718.22 : x
  2. Step 2: Convert to fraction form
    12,383.58/17,088.86 = 6,718.22/x
  3. Step 3: Cross multiply
    12,383.58x = 17,088.86 × 6,718.22
  4. Step 4: Simplify right side
    12,383.58x = 114,806,721.03
  5. Step 5: Solve for x
    x = 114,806,721.03/12,383.58
  6. Step 6: Final answer
    x = 9,270.88

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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.