Home / 31,916.87-47,878.57-12,212

Finding the Fourth Proportional to 31,916.87, 47,878.57 and 12,212

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Solution

The fourth proportional to 31,916.87, 47,878.57 and 12,212 is: 18,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,916.87 : 47,878.57 = 12,212 : x
  2. Step 2: Convert to fraction form
    31,916.87/47,878.57 = 12,212/x
  3. Step 3: Cross multiply
    31,916.87x = 47,878.57 × 12,212
  4. Step 4: Simplify right side
    31,916.87x = 584,693,096.84
  5. Step 5: Solve for x
    x = 584,693,096.84/31,916.87
  6. Step 6: Final answer
    x = 18,319.25

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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.