Home / 13,386.45-18,469.89-8,353.11

Finding the Fourth Proportional to 13,386.45, 18,469.89 and 8,353.11

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Solution

The fourth proportional to 13,386.45, 18,469.89 and 8,353.11 is: 11,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.45 : 18,469.89 = 8,353.11 : x
  2. Step 2: Convert to fraction form
    13,386.45/18,469.89 = 8,353.11/x
  3. Step 3: Cross multiply
    13,386.45x = 18,469.89 × 8,353.11
  4. Step 4: Simplify right side
    13,386.45x = 154,281,022.86
  5. Step 5: Solve for x
    x = 154,281,022.86/13,386.45
  6. Step 6: Final answer
    x = 11,525.16

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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.