Home / 31,455.88-47,200.22-12,749.74

Finding the Fourth Proportional to 31,455.88, 47,200.22 and 12,749.74

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Solution

The fourth proportional to 31,455.88, 47,200.22 and 12,749.74 is: 19,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.88 : 47,200.22 = 12,749.74 : x
  2. Step 2: Convert to fraction form
    31,455.88/47,200.22 = 12,749.74/x
  3. Step 3: Cross multiply
    31,455.88x = 47,200.22 × 12,749.74
  4. Step 4: Simplify right side
    31,455.88x = 601,790,399.01
  5. Step 5: Solve for x
    x = 601,790,399.01/31,455.88
  6. Step 6: Final answer
    x = 19,131.25

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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.