Home / 12,340.77-18,511.43-5,765.19

Finding the Fourth Proportional to 12,340.77, 18,511.43 and 5,765.19

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Solution

The fourth proportional to 12,340.77, 18,511.43 and 5,765.19 is: 8,647.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.77 : 18,511.43 = 5,765.19 : x
  2. Step 2: Convert to fraction form
    12,340.77/18,511.43 = 5,765.19/x
  3. Step 3: Cross multiply
    12,340.77x = 18,511.43 × 5,765.19
  4. Step 4: Simplify right side
    12,340.77x = 106,721,882.30
  5. Step 5: Solve for x
    x = 106,721,882.30/12,340.77
  6. Step 6: Final answer
    x = 8,647.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.