Home / 20,955.44-31,443.42-9,861.68

Finding the Fourth Proportional to 20,955.44, 31,443.42 and 9,861.68

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Solution

The fourth proportional to 20,955.44, 31,443.42 and 9,861.68 is: 14,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.44 : 31,443.42 = 9,861.68 : x
  2. Step 2: Convert to fraction form
    20,955.44/31,443.42 = 9,861.68/x
  3. Step 3: Cross multiply
    20,955.44x = 31,443.42 × 9,861.68
  4. Step 4: Simplify right side
    20,955.44x = 310,084,946.15
  5. Step 5: Solve for x
    x = 310,084,946.15/20,955.44
  6. Step 6: Final answer
    x = 14,797.35

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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.