Home / 20,923.68-28,873.20-11,490.48

Finding the Fourth Proportional to 20,923.68, 28,873.20 and 11,490.48

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Solution

The fourth proportional to 20,923.68, 28,873.20 and 11,490.48 is: 15,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.68 : 28,873.20 = 11,490.48 : x
  2. Step 2: Convert to fraction form
    20,923.68/28,873.20 = 11,490.48/x
  3. Step 3: Cross multiply
    20,923.68x = 28,873.20 × 11,490.48
  4. Step 4: Simplify right side
    20,923.68x = 331,766,927.14
  5. Step 5: Solve for x
    x = 331,766,927.14/20,923.68
  6. Step 6: Final answer
    x = 15,856.05

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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.