Home / 18,518.19-27,749.43-11,114.58

Finding the Fourth Proportional to 18,518.19, 27,749.43 and 11,114.58

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Solution

The fourth proportional to 18,518.19, 27,749.43 and 11,114.58 is: 16,655.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.19 : 27,749.43 = 11,114.58 : x
  2. Step 2: Convert to fraction form
    18,518.19/27,749.43 = 11,114.58/x
  3. Step 3: Cross multiply
    18,518.19x = 27,749.43 × 11,114.58
  4. Step 4: Simplify right side
    18,518.19x = 308,423,259.69
  5. Step 5: Solve for x
    x = 308,423,259.69/18,518.19
  6. Step 6: Final answer
    x = 16,655.15

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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.