Home / 13,342.20-18,420.78-8,564.19

Finding the Fourth Proportional to 13,342.20, 18,420.78 and 8,564.19

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Solution

The fourth proportional to 13,342.20, 18,420.78 and 8,564.19 is: 11,824.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,342.20 : 18,420.78 = 8,564.19 : x
  2. Step 2: Convert to fraction form
    13,342.20/18,420.78 = 8,564.19/x
  3. Step 3: Cross multiply
    13,342.20x = 18,420.78 × 8,564.19
  4. Step 4: Simplify right side
    13,342.20x = 157,759,059.87
  5. Step 5: Solve for x
    x = 157,759,059.87/13,342.20
  6. Step 6: Final answer
    x = 11,824.07

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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.