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Finding the Fourth Proportional to 31,474.36, 47,211.48 and 9,303.28

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Solution

The fourth proportional to 31,474.36, 47,211.48 and 9,303.28 is: 13,954.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.36 : 47,211.48 = 9,303.28 : x
  2. Step 2: Convert to fraction form
    31,474.36/47,211.48 = 9,303.28/x
  3. Step 3: Cross multiply
    31,474.36x = 47,211.48 × 9,303.28
  4. Step 4: Simplify right side
    31,474.36x = 439,221,617.65
  5. Step 5: Solve for x
    x = 439,221,617.65/31,474.36
  6. Step 6: Final answer
    x = 13,954.90

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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.