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Finding the Fourth Proportional to 12,651, 17,458.30 and 6,986.10

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Solution

The fourth proportional to 12,651, 17,458.30 and 6,986.10 is: 9,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651 : 17,458.30 = 6,986.10 : x
  2. Step 2: Convert to fraction form
    12,651/17,458.30 = 6,986.10/x
  3. Step 3: Cross multiply
    12,651x = 17,458.30 × 6,986.10
  4. Step 4: Simplify right side
    12,651x = 121,965,429.63
  5. Step 5: Solve for x
    x = 121,965,429.63/12,651
  6. Step 6: Final answer
    x = 9,640.77

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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.