Home / 31,493.21-43,446.57-21,280.94

Finding the Fourth Proportional to 31,493.21, 43,446.57 and 21,280.94

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Solution

The fourth proportional to 31,493.21, 43,446.57 and 21,280.94 is: 29,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,493.21 : 43,446.57 = 21,280.94 : x
  2. Step 2: Convert to fraction form
    31,493.21/43,446.57 = 21,280.94/x
  3. Step 3: Cross multiply
    31,493.21x = 43,446.57 × 21,280.94
  4. Step 4: Simplify right side
    31,493.21x = 924,583,632.14
  5. Step 5: Solve for x
    x = 924,583,632.14/31,493.21
  6. Step 6: Final answer
    x = 29,358.19

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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.