Home / 31,537.72-47,349.78-19,816.12

Finding the Fourth Proportional to 31,537.72, 47,349.78 and 19,816.12

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Solution

The fourth proportional to 31,537.72, 47,349.78 and 19,816.12 is: 29,751.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,537.72 : 47,349.78 = 19,816.12 : x
  2. Step 2: Convert to fraction form
    31,537.72/47,349.78 = 19,816.12/x
  3. Step 3: Cross multiply
    31,537.72x = 47,349.78 × 19,816.12
  4. Step 4: Simplify right side
    31,537.72x = 938,288,922.45
  5. Step 5: Solve for x
    x = 938,288,922.45/31,537.72
  6. Step 6: Final answer
    x = 29,751.32

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1.5x scale

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.