Home / 20,243.40-27,931.14-12,285.44

Finding the Fourth Proportional to 20,243.40, 27,931.14 and 12,285.44

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Solution

The fourth proportional to 20,243.40, 27,931.14 and 12,285.44 is: 16,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.40 : 27,931.14 = 12,285.44 : x
  2. Step 2: Convert to fraction form
    20,243.40/27,931.14 = 12,285.44/x
  3. Step 3: Cross multiply
    20,243.40x = 27,931.14 × 12,285.44
  4. Step 4: Simplify right side
    20,243.40x = 343,146,344.60
  5. Step 5: Solve for x
    x = 343,146,344.60/20,243.40
  6. Step 6: Final answer
    x = 16,951.02

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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.