Home / 31,640.15-47,534.03-18,501.75

Finding the Fourth Proportional to 31,640.15, 47,534.03 and 18,501.75

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Solution

The fourth proportional to 31,640.15, 47,534.03 and 18,501.75 is: 27,795.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.15 : 47,534.03 = 18,501.75 : x
  2. Step 2: Convert to fraction form
    31,640.15/47,534.03 = 18,501.75/x
  3. Step 3: Cross multiply
    31,640.15x = 47,534.03 × 18,501.75
  4. Step 4: Simplify right side
    31,640.15x = 879,462,647.04
  5. Step 5: Solve for x
    x = 879,462,647.04/31,640.15
  6. Step 6: Final answer
    x = 27,795.78

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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.