Home / 13,339.26-20,009.91-3,978.56

Finding the Fourth Proportional to 13,339.26, 20,009.91 and 3,978.56

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Solution

The fourth proportional to 13,339.26, 20,009.91 and 3,978.56 is: 5,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.26 : 20,009.91 = 3,978.56 : x
  2. Step 2: Convert to fraction form
    13,339.26/20,009.91 = 3,978.56/x
  3. Step 3: Cross multiply
    13,339.26x = 20,009.91 × 3,978.56
  4. Step 4: Simplify right side
    13,339.26x = 79,610,627.53
  5. Step 5: Solve for x
    x = 79,610,627.53/13,339.26
  6. Step 6: Final answer
    x = 5,968.14

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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.