Home / 13,160.21-19,740.28-3,299.47

Finding the Fourth Proportional to 13,160.21, 19,740.28 and 3,299.47

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Solution

The fourth proportional to 13,160.21, 19,740.28 and 3,299.47 is: 4,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.21 : 19,740.28 = 3,299.47 : x
  2. Step 2: Convert to fraction form
    13,160.21/19,740.28 = 3,299.47/x
  3. Step 3: Cross multiply
    13,160.21x = 19,740.28 × 3,299.47
  4. Step 4: Simplify right side
    13,160.21x = 65,132,461.65
  5. Step 5: Solve for x
    x = 65,132,461.65/13,160.21
  6. Step 6: Final answer
    x = 4,949.20

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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.