Home / 13,196.28-18,210.11-7,228.07

Finding the Fourth Proportional to 13,196.28, 18,210.11 and 7,228.07

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Solution

The fourth proportional to 13,196.28, 18,210.11 and 7,228.07 is: 9,974.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,196.28 : 18,210.11 = 7,228.07 : x
  2. Step 2: Convert to fraction form
    13,196.28/18,210.11 = 7,228.07/x
  3. Step 3: Cross multiply
    13,196.28x = 18,210.11 × 7,228.07
  4. Step 4: Simplify right side
    13,196.28x = 131,623,822.60
  5. Step 5: Solve for x
    x = 131,623,822.60/13,196.28
  6. Step 6: Final answer
    x = 9,974.31

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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.