Home / 31,709.93-47,564.28-12,739.37

Finding the Fourth Proportional to 31,709.93, 47,564.28 and 12,739.37

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Solution

The fourth proportional to 31,709.93, 47,564.28 and 12,739.37 is: 19,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.93 : 47,564.28 = 12,739.37 : x
  2. Step 2: Convert to fraction form
    31,709.93/47,564.28 = 12,739.37/x
  3. Step 3: Cross multiply
    31,709.93x = 47,564.28 × 12,739.37
  4. Step 4: Simplify right side
    31,709.93x = 605,938,723.88
  5. Step 5: Solve for x
    x = 605,938,723.88/31,709.93
  6. Step 6: Final answer
    x = 19,108.80

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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.