Home / 31,423.64-47,128.16-9,231.05

Finding the Fourth Proportional to 31,423.64, 47,128.16 and 9,231.05

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Solution

The fourth proportional to 31,423.64, 47,128.16 and 9,231.05 is: 13,844.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,423.64 : 47,128.16 = 9,231.05 : x
  2. Step 2: Convert to fraction form
    31,423.64/47,128.16 = 9,231.05/x
  3. Step 3: Cross multiply
    31,423.64x = 47,128.16 × 9,231.05
  4. Step 4: Simplify right side
    31,423.64x = 435,042,542.27
  5. Step 5: Solve for x
    x = 435,042,542.27/31,423.64
  6. Step 6: Final answer
    x = 13,844.44

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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.