Home / 15,451.96-21,323.32-9,399.96

Finding the Fourth Proportional to 15,451.96, 21,323.32 and 9,399.96

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Solution

The fourth proportional to 15,451.96, 21,323.32 and 9,399.96 is: 12,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.96 : 21,323.32 = 9,399.96 : x
  2. Step 2: Convert to fraction form
    15,451.96/21,323.32 = 9,399.96/x
  3. Step 3: Cross multiply
    15,451.96x = 21,323.32 × 9,399.96
  4. Step 4: Simplify right side
    15,451.96x = 200,438,355.07
  5. Step 5: Solve for x
    x = 200,438,355.07/15,451.96
  6. Step 6: Final answer
    x = 12,971.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.