Home / 31,424.42-47,135.36-10,647.92

Finding the Fourth Proportional to 31,424.42, 47,135.36 and 10,647.92

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Solution

The fourth proportional to 31,424.42, 47,135.36 and 10,647.92 is: 15,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,424.42 : 47,135.36 = 10,647.92 : x
  2. Step 2: Convert to fraction form
    31,424.42/47,135.36 = 10,647.92/x
  3. Step 3: Cross multiply
    31,424.42x = 47,135.36 × 10,647.92
  4. Step 4: Simplify right side
    31,424.42x = 501,893,542.45
  5. Step 5: Solve for x
    x = 501,893,542.45/31,424.42
  6. Step 6: Final answer
    x = 15,971.45

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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.