Home / 31,172.60-46,731.08-13,628.54

Finding the Fourth Proportional to 31,172.60, 46,731.08 and 13,628.54

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Solution

The fourth proportional to 31,172.60, 46,731.08 and 13,628.54 is: 20,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,172.60 : 46,731.08 = 13,628.54 : x
  2. Step 2: Convert to fraction form
    31,172.60/46,731.08 = 13,628.54/x
  3. Step 3: Cross multiply
    31,172.60x = 46,731.08 × 13,628.54
  4. Step 4: Simplify right side
    31,172.60x = 636,876,393.02
  5. Step 5: Solve for x
    x = 636,876,393.02/31,172.60
  6. Step 6: Final answer
    x = 20,430.65

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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.