Home / 31,530.09-47,289.96-12,809.37

Finding the Fourth Proportional to 31,530.09, 47,289.96 and 12,809.37

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Solution

The fourth proportional to 31,530.09, 47,289.96 and 12,809.37 is: 19,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.09 : 47,289.96 = 12,809.37 : x
  2. Step 2: Convert to fraction form
    31,530.09/47,289.96 = 12,809.37/x
  3. Step 3: Cross multiply
    31,530.09x = 47,289.96 × 12,809.37
  4. Step 4: Simplify right side
    31,530.09x = 605,754,772.26
  5. Step 5: Solve for x
    x = 605,754,772.26/31,530.09
  6. Step 6: Final answer
    x = 19,211.96

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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.