Home / 13,370.90-20,037.21-7,515.20

Finding the Fourth Proportional to 13,370.90, 20,037.21 and 7,515.20

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Solution

The fourth proportional to 13,370.90, 20,037.21 and 7,515.20 is: 11,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.90 : 20,037.21 = 7,515.20 : x
  2. Step 2: Convert to fraction form
    13,370.90/20,037.21 = 7,515.20/x
  3. Step 3: Cross multiply
    13,370.90x = 20,037.21 × 7,515.20
  4. Step 4: Simplify right side
    13,370.90x = 150,583,662.50
  5. Step 5: Solve for x
    x = 150,583,662.50/13,370.90
  6. Step 6: Final answer
    x = 11,262.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.