Home / 10,107.12-15,174.87-5,180.31

Finding the Fourth Proportional to 10,107.12, 15,174.87 and 5,180.31

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Solution

The fourth proportional to 10,107.12, 15,174.87 and 5,180.31 is: 7,777.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,107.12 : 15,174.87 = 5,180.31 : x
  2. Step 2: Convert to fraction form
    10,107.12/15,174.87 = 5,180.31/x
  3. Step 3: Cross multiply
    10,107.12x = 15,174.87 × 5,180.31
  4. Step 4: Simplify right side
    10,107.12x = 78,610,530.81
  5. Step 5: Solve for x
    x = 78,610,530.81/10,107.12
  6. Step 6: Final answer
    x = 7,777.74

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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.