Home / 20,677.40-28,534.70-11,724.88

Finding the Fourth Proportional to 20,677.40, 28,534.70 and 11,724.88

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Solution

The fourth proportional to 20,677.40, 28,534.70 and 11,724.88 is: 16,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.40 : 28,534.70 = 11,724.88 : x
  2. Step 2: Convert to fraction form
    20,677.40/28,534.70 = 11,724.88/x
  3. Step 3: Cross multiply
    20,677.40x = 28,534.70 × 11,724.88
  4. Step 4: Simplify right side
    20,677.40x = 334,565,933.34
  5. Step 5: Solve for x
    x = 334,565,933.34/20,677.40
  6. Step 6: Final answer
    x = 16,180.27

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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.