Home / 20,955.46-31,420.22-9,864.94

Finding the Fourth Proportional to 20,955.46, 31,420.22 and 9,864.94

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Solution

The fourth proportional to 20,955.46, 31,420.22 and 9,864.94 is: 14,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.46 : 31,420.22 = 9,864.94 : x
  2. Step 2: Convert to fraction form
    20,955.46/31,420.22 = 9,864.94/x
  3. Step 3: Cross multiply
    20,955.46x = 31,420.22 × 9,864.94
  4. Step 4: Simplify right side
    20,955.46x = 309,958,585.09
  5. Step 5: Solve for x
    x = 309,958,585.09/20,955.46
  6. Step 6: Final answer
    x = 14,791.30

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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.