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Finding the Fourth Proportional to 23,471.64, 35,025.48 and 20,979

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Solution

The fourth proportional to 23,471.64, 35,025.48 and 20,979 is: 31,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,471.64 : 35,025.48 = 20,979 : x
  2. Step 2: Convert to fraction form
    23,471.64/35,025.48 = 20,979/x
  3. Step 3: Cross multiply
    23,471.64x = 35,025.48 × 20,979
  4. Step 4: Simplify right side
    23,471.64x = 734,799,544.92
  5. Step 5: Solve for x
    x = 734,799,544.92/23,471.64
  6. Step 6: Final answer
    x = 31,305.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.