Home / 13,278.60-18,333.54-8,505.54

Finding the Fourth Proportional to 13,278.60, 18,333.54 and 8,505.54

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Solution

The fourth proportional to 13,278.60, 18,333.54 and 8,505.54 is: 11,743.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.60 : 18,333.54 = 8,505.54 : x
  2. Step 2: Convert to fraction form
    13,278.60/18,333.54 = 8,505.54/x
  3. Step 3: Cross multiply
    13,278.60x = 18,333.54 × 8,505.54
  4. Step 4: Simplify right side
    13,278.60x = 155,936,657.81
  5. Step 5: Solve for x
    x = 155,936,657.81/13,278.60
  6. Step 6: Final answer
    x = 11,743.46

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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.