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Finding the Fourth Proportional to 12,673.80, 17,498.02 and 11,345.16

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Solution

The fourth proportional to 12,673.80, 17,498.02 and 11,345.16 is: 15,663.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673.80 : 17,498.02 = 11,345.16 : x
  2. Step 2: Convert to fraction form
    12,673.80/17,498.02 = 11,345.16/x
  3. Step 3: Cross multiply
    12,673.80x = 17,498.02 × 11,345.16
  4. Step 4: Simplify right side
    12,673.80x = 198,517,836.58
  5. Step 5: Solve for x
    x = 198,517,836.58/12,673.80
  6. Step 6: Final answer
    x = 15,663.64

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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.