Home / 13,113.54-18,109.50-11,214.12

Finding the Fourth Proportional to 13,113.54, 18,109.50 and 11,214.12

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Solution

The fourth proportional to 13,113.54, 18,109.50 and 11,214.12 is: 15,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.54 : 18,109.50 = 11,214.12 : x
  2. Step 2: Convert to fraction form
    13,113.54/18,109.50 = 11,214.12/x
  3. Step 3: Cross multiply
    13,113.54x = 18,109.50 × 11,214.12
  4. Step 4: Simplify right side
    13,113.54x = 203,082,106.14
  5. Step 5: Solve for x
    x = 203,082,106.14/13,113.54
  6. Step 6: Final answer
    x = 15,486.44

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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.