Home / 31,890.19-47,825.55-8,513.59

Finding the Fourth Proportional to 31,890.19, 47,825.55 and 8,513.59

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Solution

The fourth proportional to 31,890.19, 47,825.55 and 8,513.59 is: 12,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.19 : 47,825.55 = 8,513.59 : x
  2. Step 2: Convert to fraction form
    31,890.19/47,825.55 = 8,513.59/x
  3. Step 3: Cross multiply
    31,890.19x = 47,825.55 × 8,513.59
  4. Step 4: Simplify right side
    31,890.19x = 407,167,124.22
  5. Step 5: Solve for x
    x = 407,167,124.22/31,890.19
  6. Step 6: Final answer
    x = 12,767.79

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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.