Home / 12,505.41-18,751.19-5,115.06

Finding the Fourth Proportional to 12,505.41, 18,751.19 and 5,115.06

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Solution

The fourth proportional to 12,505.41, 18,751.19 and 5,115.06 is: 7,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.41 : 18,751.19 = 5,115.06 : x
  2. Step 2: Convert to fraction form
    12,505.41/18,751.19 = 5,115.06/x
  3. Step 3: Cross multiply
    12,505.41x = 18,751.19 × 5,115.06
  4. Step 4: Simplify right side
    12,505.41x = 95,913,474.71
  5. Step 5: Solve for x
    x = 95,913,474.71/12,505.41
  6. Step 6: Final answer
    x = 7,669.76

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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.