Home / 31,778.48-47,670.49-10,424.79

Finding the Fourth Proportional to 31,778.48, 47,670.49 and 10,424.79

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Solution

The fourth proportional to 31,778.48, 47,670.49 and 10,424.79 is: 15,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.48 : 47,670.49 = 10,424.79 : x
  2. Step 2: Convert to fraction form
    31,778.48/47,670.49 = 10,424.79/x
  3. Step 3: Cross multiply
    31,778.48x = 47,670.49 × 10,424.79
  4. Step 4: Simplify right side
    31,778.48x = 496,954,771.81
  5. Step 5: Solve for x
    x = 496,954,771.81/31,778.48
  6. Step 6: Final answer
    x = 15,638.09

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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.