Home / 31,359.31-47,035.49-9,172.87

Finding the Fourth Proportional to 31,359.31, 47,035.49 and 9,172.87

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Solution

The fourth proportional to 31,359.31, 47,035.49 and 9,172.87 is: 13,758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,359.31 : 47,035.49 = 9,172.87 : x
  2. Step 2: Convert to fraction form
    31,359.31/47,035.49 = 9,172.87/x
  3. Step 3: Cross multiply
    31,359.31x = 47,035.49 × 9,172.87
  4. Step 4: Simplify right side
    31,359.31x = 431,450,271.70
  5. Step 5: Solve for x
    x = 431,450,271.70/31,359.31
  6. Step 6: Final answer
    x = 13,758.28

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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.