Home / 13,349.21-20,023.98-3,987.09

Finding the Fourth Proportional to 13,349.21, 20,023.98 and 3,987.09

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Solution

The fourth proportional to 13,349.21, 20,023.98 and 3,987.09 is: 5,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.21 : 20,023.98 = 3,987.09 : x
  2. Step 2: Convert to fraction form
    13,349.21/20,023.98 = 3,987.09/x
  3. Step 3: Cross multiply
    13,349.21x = 20,023.98 × 3,987.09
  4. Step 4: Simplify right side
    13,349.21x = 79,837,395.47
  5. Step 5: Solve for x
    x = 79,837,395.47/13,349.21
  6. Step 6: Final answer
    x = 5,980.69

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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.