Home / 12,158.04-18,231.80-5,141.19

Finding the Fourth Proportional to 12,158.04, 18,231.80 and 5,141.19

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Solution

The fourth proportional to 12,158.04, 18,231.80 and 5,141.19 is: 7,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.04 : 18,231.80 = 5,141.19 : x
  2. Step 2: Convert to fraction form
    12,158.04/18,231.80 = 5,141.19/x
  3. Step 3: Cross multiply
    12,158.04x = 18,231.80 × 5,141.19
  4. Step 4: Simplify right side
    12,158.04x = 93,733,122.14
  5. Step 5: Solve for x
    x = 93,733,122.14/12,158.04
  6. Step 6: Final answer
    x = 7,709.56

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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.