Home / 15,318.36-22,980.24-7,920.81

Finding the Fourth Proportional to 15,318.36, 22,980.24 and 7,920.81

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Solution

The fourth proportional to 15,318.36, 22,980.24 and 7,920.81 is: 11,882.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.36 : 22,980.24 = 7,920.81 : x
  2. Step 2: Convert to fraction form
    15,318.36/22,980.24 = 7,920.81/x
  3. Step 3: Cross multiply
    15,318.36x = 22,980.24 × 7,920.81
  4. Step 4: Simplify right side
    15,318.36x = 182,022,114.79
  5. Step 5: Solve for x
    x = 182,022,114.79/15,318.36
  6. Step 6: Final answer
    x = 11,882.61

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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.