Home / 12,520.82-17,276.70-7,487.12

Finding the Fourth Proportional to 12,520.82, 17,276.70 and 7,487.12

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Solution

The fourth proportional to 12,520.82, 17,276.70 and 7,487.12 is: 10,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.82 : 17,276.70 = 7,487.12 : x
  2. Step 2: Convert to fraction form
    12,520.82/17,276.70 = 7,487.12/x
  3. Step 3: Cross multiply
    12,520.82x = 17,276.70 × 7,487.12
  4. Step 4: Simplify right side
    12,520.82x = 129,352,726.10
  5. Step 5: Solve for x
    x = 129,352,726.10/12,520.82
  6. Step 6: Final answer
    x = 10,331.01

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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.