Home / 13,341.20-18,419.40-8,563.19

Finding the Fourth Proportional to 13,341.20, 18,419.40 and 8,563.19

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Solution

The fourth proportional to 13,341.20, 18,419.40 and 8,563.19 is: 11,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,341.20 : 18,419.40 = 8,563.19 : x
  2. Step 2: Convert to fraction form
    13,341.20/18,419.40 = 8,563.19/x
  3. Step 3: Cross multiply
    13,341.20x = 18,419.40 × 8,563.19
  4. Step 4: Simplify right side
    13,341.20x = 157,728,729.79
  5. Step 5: Solve for x
    x = 157,728,729.79/13,341.20
  6. Step 6: Final answer
    x = 11,822.68

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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.