Home / 31,486.88-47,221.36-10,709.92

Finding the Fourth Proportional to 31,486.88, 47,221.36 and 10,709.92

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Solution

The fourth proportional to 31,486.88, 47,221.36 and 10,709.92 is: 16,061.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.88 : 47,221.36 = 10,709.92 : x
  2. Step 2: Convert to fraction form
    31,486.88/47,221.36 = 10,709.92/x
  3. Step 3: Cross multiply
    31,486.88x = 47,221.36 × 10,709.92
  4. Step 4: Simplify right side
    31,486.88x = 505,736,987.89
  5. Step 5: Solve for x
    x = 505,736,987.89/31,486.88
  6. Step 6: Final answer
    x = 16,061.83

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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.