Home / 20,903.22-28,846.05-11,471.70

Finding the Fourth Proportional to 20,903.22, 28,846.05 and 11,471.70

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Solution

The fourth proportional to 20,903.22, 28,846.05 and 11,471.70 is: 15,830.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.22 : 28,846.05 = 11,471.70 : x
  2. Step 2: Convert to fraction form
    20,903.22/28,846.05 = 11,471.70/x
  3. Step 3: Cross multiply
    20,903.22x = 28,846.05 × 11,471.70
  4. Step 4: Simplify right side
    20,903.22x = 330,913,231.79
  5. Step 5: Solve for x
    x = 330,913,231.79/20,903.22
  6. Step 6: Final answer
    x = 15,830.73

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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.