Home / 31,920.60-47,880.92-15,276.72

Finding the Fourth Proportional to 31,920.60, 47,880.92 and 15,276.72

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Solution

The fourth proportional to 31,920.60, 47,880.92 and 15,276.72 is: 22,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920.60 : 47,880.92 = 15,276.72 : x
  2. Step 2: Convert to fraction form
    31,920.60/47,880.92 = 15,276.72/x
  3. Step 3: Cross multiply
    31,920.60x = 47,880.92 × 15,276.72
  4. Step 4: Simplify right side
    31,920.60x = 731,463,408.18
  5. Step 5: Solve for x
    x = 731,463,408.18/31,920.60
  6. Step 6: Final answer
    x = 22,915.09

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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.