Home / 20,363.70-28,096.56-12,409.50

Finding the Fourth Proportional to 20,363.70, 28,096.56 and 12,409.50

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Solution

The fourth proportional to 20,363.70, 28,096.56 and 12,409.50 is: 17,121.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.70 : 28,096.56 = 12,409.50 : x
  2. Step 2: Convert to fraction form
    20,363.70/28,096.56 = 12,409.50/x
  3. Step 3: Cross multiply
    20,363.70x = 28,096.56 × 12,409.50
  4. Step 4: Simplify right side
    20,363.70x = 348,664,261.32
  5. Step 5: Solve for x
    x = 348,664,261.32/20,363.70
  6. Step 6: Final answer
    x = 17,121.85

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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.