Home / 13,679.99-20,519.98-3,291.74

Finding the Fourth Proportional to 13,679.99, 20,519.98 and 3,291.74

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Solution

The fourth proportional to 13,679.99, 20,519.98 and 3,291.74 is: 4,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.99 : 20,519.98 = 3,291.74 : x
  2. Step 2: Convert to fraction form
    13,679.99/20,519.98 = 3,291.74/x
  3. Step 3: Cross multiply
    13,679.99x = 20,519.98 × 3,291.74
  4. Step 4: Simplify right side
    13,679.99x = 67,546,319.91
  5. Step 5: Solve for x
    x = 67,546,319.91/13,679.99
  6. Step 6: Final answer
    x = 4,937.60

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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.