Home / 12,684.77-17,508.51-7,380.62

Finding the Fourth Proportional to 12,684.77, 17,508.51 and 7,380.62

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Solution

The fourth proportional to 12,684.77, 17,508.51 and 7,380.62 is: 10,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.77 : 17,508.51 = 7,380.62 : x
  2. Step 2: Convert to fraction form
    12,684.77/17,508.51 = 7,380.62/x
  3. Step 3: Cross multiply
    12,684.77x = 17,508.51 × 7,380.62
  4. Step 4: Simplify right side
    12,684.77x = 129,223,534.63
  5. Step 5: Solve for x
    x = 129,223,534.63/12,684.77
  6. Step 6: Final answer
    x = 10,187.30

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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.