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Finding the Fourth Proportional to 12,607.49, 17,398.74 and 6,942.65

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Solution

The fourth proportional to 12,607.49, 17,398.74 and 6,942.65 is: 9,581.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.49 : 17,398.74 = 6,942.65 : x
  2. Step 2: Convert to fraction form
    12,607.49/17,398.74 = 6,942.65/x
  3. Step 3: Cross multiply
    12,607.49x = 17,398.74 × 6,942.65
  4. Step 4: Simplify right side
    12,607.49x = 120,793,275.27
  5. Step 5: Solve for x
    x = 120,793,275.27/12,607.49
  6. Step 6: Final answer
    x = 9,581.08

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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.