Home / 31,390-47,081.52-9,203.56

Finding the Fourth Proportional to 31,390, 47,081.52 and 9,203.56

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Solution

The fourth proportional to 31,390, 47,081.52 and 9,203.56 is: 13,804.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390 : 47,081.52 = 9,203.56 : x
  2. Step 2: Convert to fraction form
    31,390/47,081.52 = 9,203.56/x
  3. Step 3: Cross multiply
    31,390x = 47,081.52 × 9,203.56
  4. Step 4: Simplify right side
    31,390x = 433,317,594.21
  5. Step 5: Solve for x
    x = 433,317,594.21/31,390
  6. Step 6: Final answer
    x = 13,804.32

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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.