Home / 31,321.14-46,977.15-9,128.55

Finding the Fourth Proportional to 31,321.14, 46,977.15 and 9,128.55

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Solution

The fourth proportional to 31,321.14, 46,977.15 and 9,128.55 is: 13,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,321.14 : 46,977.15 = 9,128.55 : x
  2. Step 2: Convert to fraction form
    31,321.14/46,977.15 = 9,128.55/x
  3. Step 3: Cross multiply
    31,321.14x = 46,977.15 × 9,128.55
  4. Step 4: Simplify right side
    31,321.14x = 428,833,421.68
  5. Step 5: Solve for x
    x = 428,833,421.68/31,321.14
  6. Step 6: Final answer
    x = 13,691.50

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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.