Home / 13,370.24-18,453.60-8,065.28

Finding the Fourth Proportional to 13,370.24, 18,453.60 and 8,065.28

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Solution

The fourth proportional to 13,370.24, 18,453.60 and 8,065.28 is: 11,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.24 : 18,453.60 = 8,065.28 : x
  2. Step 2: Convert to fraction form
    13,370.24/18,453.60 = 8,065.28/x
  3. Step 3: Cross multiply
    13,370.24x = 18,453.60 × 8,065.28
  4. Step 4: Simplify right side
    13,370.24x = 148,833,451.01
  5. Step 5: Solve for x
    x = 148,833,451.01/13,370.24
  6. Step 6: Final answer
    x = 11,131.70

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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.