Home / 12,530.67-17,300.30-7,821.87

Finding the Fourth Proportional to 12,530.67, 17,300.30 and 7,821.87

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Solution

The fourth proportional to 12,530.67, 17,300.30 and 7,821.87 is: 10,799.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,530.67 : 17,300.30 = 7,821.87 : x
  2. Step 2: Convert to fraction form
    12,530.67/17,300.30 = 7,821.87/x
  3. Step 3: Cross multiply
    12,530.67x = 17,300.30 × 7,821.87
  4. Step 4: Simplify right side
    12,530.67x = 135,320,697.56
  5. Step 5: Solve for x
    x = 135,320,697.56/12,530.67
  6. Step 6: Final answer
    x = 10,799.16

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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.