Home / 31,611.24-47,403.68-12,878.57

Finding the Fourth Proportional to 31,611.24, 47,403.68 and 12,878.57

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Solution

The fourth proportional to 31,611.24, 47,403.68 and 12,878.57 is: 19,312.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.24 : 47,403.68 = 12,878.57 : x
  2. Step 2: Convert to fraction form
    31,611.24/47,403.68 = 12,878.57/x
  3. Step 3: Cross multiply
    31,611.24x = 47,403.68 × 12,878.57
  4. Step 4: Simplify right side
    31,611.24x = 610,491,309.73
  5. Step 5: Solve for x
    x = 610,491,309.73/31,611.24
  6. Step 6: Final answer
    x = 19,312.48

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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.