Home / 20,669.90-28,524.34-11,238.46

Finding the Fourth Proportional to 20,669.90, 28,524.34 and 11,238.46

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Solution

The fourth proportional to 20,669.90, 28,524.34 and 11,238.46 is: 15,509.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.90 : 28,524.34 = 11,238.46 : x
  2. Step 2: Convert to fraction form
    20,669.90/28,524.34 = 11,238.46/x
  3. Step 3: Cross multiply
    20,669.90x = 28,524.34 × 11,238.46
  4. Step 4: Simplify right side
    20,669.90x = 320,569,654.12
  5. Step 5: Solve for x
    x = 320,569,654.12/20,669.90
  6. Step 6: Final answer
    x = 15,509.01

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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.