Home / 20,334.72-28,061.64-11,382.22

Finding the Fourth Proportional to 20,334.72, 28,061.64 and 11,382.22

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Solution

The fourth proportional to 20,334.72, 28,061.64 and 11,382.22 is: 15,707.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.72 : 28,061.64 = 11,382.22 : x
  2. Step 2: Convert to fraction form
    20,334.72/28,061.64 = 11,382.22/x
  3. Step 3: Cross multiply
    20,334.72x = 28,061.64 × 11,382.22
  4. Step 4: Simplify right side
    20,334.72x = 319,403,795.12
  5. Step 5: Solve for x
    x = 319,403,795.12/20,334.72
  6. Step 6: Final answer
    x = 15,707.31

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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.