Home / 13,194.40-19,802.80-5,408.80

Finding the Fourth Proportional to 13,194.40, 19,802.80 and 5,408.80

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Solution

The fourth proportional to 13,194.40, 19,802.80 and 5,408.80 is: 8,117.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,194.40 : 19,802.80 = 5,408.80 : x
  2. Step 2: Convert to fraction form
    13,194.40/19,802.80 = 5,408.80/x
  3. Step 3: Cross multiply
    13,194.40x = 19,802.80 × 5,408.80
  4. Step 4: Simplify right side
    13,194.40x = 107,109,384.64
  5. Step 5: Solve for x
    x = 107,109,384.64/13,194.40
  6. Step 6: Final answer
    x = 8,117.79

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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.