Home / 12,130.10-18,195.15-4,739.75

Finding the Fourth Proportional to 12,130.10, 18,195.15 and 4,739.75

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Solution

The fourth proportional to 12,130.10, 18,195.15 and 4,739.75 is: 7,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.10 : 18,195.15 = 4,739.75 : x
  2. Step 2: Convert to fraction form
    12,130.10/18,195.15 = 4,739.75/x
  3. Step 3: Cross multiply
    12,130.10x = 18,195.15 × 4,739.75
  4. Step 4: Simplify right side
    12,130.10x = 86,240,462.21
  5. Step 5: Solve for x
    x = 86,240,462.21/12,130.10
  6. Step 6: Final answer
    x = 7,109.63

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Similar ratio
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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.