Home / 18,705.68-25,812.76-11,160.56

Finding the Fourth Proportional to 18,705.68, 25,812.76 and 11,160.56

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Solution

The fourth proportional to 18,705.68, 25,812.76 and 11,160.56 is: 15,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.68 : 25,812.76 = 11,160.56 : x
  2. Step 2: Convert to fraction form
    18,705.68/25,812.76 = 11,160.56/x
  3. Step 3: Cross multiply
    18,705.68x = 25,812.76 × 11,160.56
  4. Step 4: Simplify right side
    18,705.68x = 288,084,856.75
  5. Step 5: Solve for x
    x = 288,084,856.75/18,705.68
  6. Step 6: Final answer
    x = 15,400.93

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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.