Home / 13,320.45-18,370.94-8,014.28

Finding the Fourth Proportional to 13,320.45, 18,370.94 and 8,014.28

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Solution

The fourth proportional to 13,320.45, 18,370.94 and 8,014.28 is: 11,052.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.45 : 18,370.94 = 8,014.28 : x
  2. Step 2: Convert to fraction form
    13,320.45/18,370.94 = 8,014.28/x
  3. Step 3: Cross multiply
    13,320.45x = 18,370.94 × 8,014.28
  4. Step 4: Simplify right side
    13,320.45x = 147,229,725.10
  5. Step 5: Solve for x
    x = 147,229,725.10/13,320.45
  6. Step 6: Final answer
    x = 11,052.91

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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.