Home / 13,588.20-18,751.36-7,620.24

Finding the Fourth Proportional to 13,588.20, 18,751.36 and 7,620.24

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Solution

The fourth proportional to 13,588.20, 18,751.36 and 7,620.24 is: 10,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,588.20 : 18,751.36 = 7,620.24 : x
  2. Step 2: Convert to fraction form
    13,588.20/18,751.36 = 7,620.24/x
  3. Step 3: Cross multiply
    13,588.20x = 18,751.36 × 7,620.24
  4. Step 4: Simplify right side
    13,588.20x = 142,889,863.53
  5. Step 5: Solve for x
    x = 142,889,863.53/13,588.20
  6. Step 6: Final answer
    x = 10,515.73

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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.