Home / 11,921.13-17,888.18-5,000.49

Finding the Fourth Proportional to 11,921.13, 17,888.18 and 5,000.49

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Solution

The fourth proportional to 11,921.13, 17,888.18 and 5,000.49 is: 7,503.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.13 : 17,888.18 = 5,000.49 : x
  2. Step 2: Convert to fraction form
    11,921.13/17,888.18 = 5,000.49/x
  3. Step 3: Cross multiply
    11,921.13x = 17,888.18 × 5,000.49
  4. Step 4: Simplify right side
    11,921.13x = 89,449,640.21
  5. Step 5: Solve for x
    x = 89,449,640.21/11,921.13
  6. Step 6: Final answer
    x = 7,503.45

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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.