Home / 13,374.60-20,105.10-9,505.80

Finding the Fourth Proportional to 13,374.60, 20,105.10 and 9,505.80

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Solution

The fourth proportional to 13,374.60, 20,105.10 and 9,505.80 is: 14,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.60 : 20,105.10 = 9,505.80 : x
  2. Step 2: Convert to fraction form
    13,374.60/20,105.10 = 9,505.80/x
  3. Step 3: Cross multiply
    13,374.60x = 20,105.10 × 9,505.80
  4. Step 4: Simplify right side
    13,374.60x = 191,115,059.58
  5. Step 5: Solve for x
    x = 191,115,059.58/13,374.60
  6. Step 6: Final answer
    x = 14,289.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.