Home / 31,377.20-47,080.36-11,662.60

Finding the Fourth Proportional to 31,377.20, 47,080.36 and 11,662.60

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Solution

The fourth proportional to 31,377.20, 47,080.36 and 11,662.60 is: 17,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,377.20 : 47,080.36 = 11,662.60 : x
  2. Step 2: Convert to fraction form
    31,377.20/47,080.36 = 11,662.60/x
  3. Step 3: Cross multiply
    31,377.20x = 47,080.36 × 11,662.60
  4. Step 4: Simplify right side
    31,377.20x = 549,079,406.54
  5. Step 5: Solve for x
    x = 549,079,406.54/31,377.20
  6. Step 6: Final answer
    x = 17,499.31

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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.