Home / 31,418.61-47,141.90-15,639.41

Finding the Fourth Proportional to 31,418.61, 47,141.90 and 15,639.41

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Solution

The fourth proportional to 31,418.61, 47,141.90 and 15,639.41 is: 23,466.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,418.61 : 47,141.90 = 15,639.41 : x
  2. Step 2: Convert to fraction form
    31,418.61/47,141.90 = 15,639.41/x
  3. Step 3: Cross multiply
    31,418.61x = 47,141.90 × 15,639.41
  4. Step 4: Simplify right side
    31,418.61x = 737,271,188.37
  5. Step 5: Solve for x
    x = 737,271,188.37/31,418.61
  6. Step 6: Final answer
    x = 23,466.07

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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.