Home / 20,424.41-28,184.34-11,471.72

Finding the Fourth Proportional to 20,424.41, 28,184.34 and 11,471.72

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Solution

The fourth proportional to 20,424.41, 28,184.34 and 11,471.72 is: 15,830.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.41 : 28,184.34 = 11,471.72 : x
  2. Step 2: Convert to fraction form
    20,424.41/28,184.34 = 11,471.72/x
  3. Step 3: Cross multiply
    20,424.41x = 28,184.34 × 11,471.72
  4. Step 4: Simplify right side
    20,424.41x = 323,322,856.86
  5. Step 5: Solve for x
    x = 323,322,856.86/20,424.41
  6. Step 6: Final answer
    x = 15,830.22

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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.