Home / 20,839.46-28,759.18-11,888.34

Finding the Fourth Proportional to 20,839.46, 28,759.18 and 11,888.34

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Solution

The fourth proportional to 20,839.46, 28,759.18 and 11,888.34 is: 16,406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.46 : 28,759.18 = 11,888.34 : x
  2. Step 2: Convert to fraction form
    20,839.46/28,759.18 = 11,888.34/x
  3. Step 3: Cross multiply
    20,839.46x = 28,759.18 × 11,888.34
  4. Step 4: Simplify right side
    20,839.46x = 341,898,909.96
  5. Step 5: Solve for x
    x = 341,898,909.96/20,839.46
  6. Step 6: Final answer
    x = 16,406.32

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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.