Home / 20,956.32-31,445.01-9,861.75

Finding the Fourth Proportional to 20,956.32, 31,445.01 and 9,861.75

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Solution

The fourth proportional to 20,956.32, 31,445.01 and 9,861.75 is: 14,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.32 : 31,445.01 = 9,861.75 : x
  2. Step 2: Convert to fraction form
    20,956.32/31,445.01 = 9,861.75/x
  3. Step 3: Cross multiply
    20,956.32x = 31,445.01 × 9,861.75
  4. Step 4: Simplify right side
    20,956.32x = 310,102,827.37
  5. Step 5: Solve for x
    x = 310,102,827.37/20,956.32
  6. Step 6: Final answer
    x = 14,797.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.