Home / 18,664.79-25,755.69-11,109.92

Finding the Fourth Proportional to 18,664.79, 25,755.69 and 11,109.92

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Solution

The fourth proportional to 18,664.79, 25,755.69 and 11,109.92 is: 15,330.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.79 : 25,755.69 = 11,109.92 : x
  2. Step 2: Convert to fraction form
    18,664.79/25,755.69 = 11,109.92/x
  3. Step 3: Cross multiply
    18,664.79x = 25,755.69 × 11,109.92
  4. Step 4: Simplify right side
    18,664.79x = 286,143,526.67
  5. Step 5: Solve for x
    x = 286,143,526.67/18,664.79
  6. Step 6: Final answer
    x = 15,330.66

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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.