Home / 31,131.52-46,687.70-8,938.93

Finding the Fourth Proportional to 31,131.52, 46,687.70 and 8,938.93

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Solution

The fourth proportional to 31,131.52, 46,687.70 and 8,938.93 is: 13,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,131.52 : 46,687.70 = 8,938.93 : x
  2. Step 2: Convert to fraction form
    31,131.52/46,687.70 = 8,938.93/x
  3. Step 3: Cross multiply
    31,131.52x = 46,687.70 × 8,938.93
  4. Step 4: Simplify right side
    31,131.52x = 417,338,082.16
  5. Step 5: Solve for x
    x = 417,338,082.16/31,131.52
  6. Step 6: Final answer
    x = 13,405.64

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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.