Home / 13,196.79-18,211.77-7,228.44

Finding the Fourth Proportional to 13,196.79, 18,211.77 and 7,228.44

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Solution

The fourth proportional to 13,196.79, 18,211.77 and 7,228.44 is: 9,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,196.79 : 18,211.77 = 7,228.44 : x
  2. Step 2: Convert to fraction form
    13,196.79/18,211.77 = 7,228.44/x
  3. Step 3: Cross multiply
    13,196.79x = 18,211.77 × 7,228.44
  4. Step 4: Simplify right side
    13,196.79x = 131,642,686.74
  5. Step 5: Solve for x
    x = 131,642,686.74/13,196.79
  6. Step 6: Final answer
    x = 9,975.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.