Home / 20,664.72-28,518.48-11,233.08

Finding the Fourth Proportional to 20,664.72, 28,518.48 and 11,233.08

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Solution

The fourth proportional to 20,664.72, 28,518.48 and 11,233.08 is: 15,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.72 : 28,518.48 = 11,233.08 : x
  2. Step 2: Convert to fraction form
    20,664.72/28,518.48 = 11,233.08/x
  3. Step 3: Cross multiply
    20,664.72x = 28,518.48 × 11,233.08
  4. Step 4: Simplify right side
    20,664.72x = 320,350,367.32
  5. Step 5: Solve for x
    x = 320,350,367.32/20,664.72
  6. Step 6: Final answer
    x = 15,502.28

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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.