Home / 31,512.77-47,272.62-12,790.09

Finding the Fourth Proportional to 31,512.77, 47,272.62 and 12,790.09

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Solution

The fourth proportional to 31,512.77, 47,272.62 and 12,790.09 is: 19,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512.77 : 47,272.62 = 12,790.09 : x
  2. Step 2: Convert to fraction form
    31,512.77/47,272.62 = 12,790.09/x
  3. Step 3: Cross multiply
    31,512.77x = 47,272.62 × 12,790.09
  4. Step 4: Simplify right side
    31,512.77x = 604,620,946.15
  5. Step 5: Solve for x
    x = 604,620,946.15/31,512.77
  6. Step 6: Final answer
    x = 19,186.54

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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.