Home / 13,113.99-19,679.19-5,322.80

Finding the Fourth Proportional to 13,113.99, 19,679.19 and 5,322.80

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Solution

The fourth proportional to 13,113.99, 19,679.19 and 5,322.80 is: 7,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.99 : 19,679.19 = 5,322.80 : x
  2. Step 2: Convert to fraction form
    13,113.99/19,679.19 = 5,322.80/x
  3. Step 3: Cross multiply
    13,113.99x = 19,679.19 × 5,322.80
  4. Step 4: Simplify right side
    13,113.99x = 104,748,365.92
  5. Step 5: Solve for x
    x = 104,748,365.92/13,113.99
  6. Step 6: Final answer
    x = 7,987.53

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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.