Home / 31,790.07-47,698.56-15,986.79

Finding the Fourth Proportional to 31,790.07, 47,698.56 and 15,986.79

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Solution

The fourth proportional to 31,790.07, 47,698.56 and 15,986.79 is: 23,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.07 : 47,698.56 = 15,986.79 : x
  2. Step 2: Convert to fraction form
    31,790.07/47,698.56 = 15,986.79/x
  3. Step 3: Cross multiply
    31,790.07x = 47,698.56 × 15,986.79
  4. Step 4: Simplify right side
    31,790.07x = 762,546,862.02
  5. Step 5: Solve for x
    x = 762,546,862.02/31,790.07
  6. Step 6: Final answer
    x = 23,986.95

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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.