Home / 12,507.08-18,760.61-5,109.89

Finding the Fourth Proportional to 12,507.08, 18,760.61 and 5,109.89

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Solution

The fourth proportional to 12,507.08, 18,760.61 and 5,109.89 is: 7,664.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,507.08 : 18,760.61 = 5,109.89 : x
  2. Step 2: Convert to fraction form
    12,507.08/18,760.61 = 5,109.89/x
  3. Step 3: Cross multiply
    12,507.08x = 18,760.61 × 5,109.89
  4. Step 4: Simplify right side
    12,507.08x = 95,864,572.40
  5. Step 5: Solve for x
    x = 95,864,572.40/12,507.08
  6. Step 6: Final answer
    x = 7,664.83

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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.