Home / 31,916.70-47,878.38-12,211.74

Finding the Fourth Proportional to 31,916.70, 47,878.38 and 12,211.74

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Solution

The fourth proportional to 31,916.70, 47,878.38 and 12,211.74 is: 18,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,916.70 : 47,878.38 = 12,211.74 : x
  2. Step 2: Convert to fraction form
    31,916.70/47,878.38 = 12,211.74/x
  3. Step 3: Cross multiply
    31,916.70x = 47,878.38 × 12,211.74
  4. Step 4: Simplify right side
    31,916.70x = 584,678,328.18
  5. Step 5: Solve for x
    x = 584,678,328.18/31,916.70
  6. Step 6: Final answer
    x = 18,318.88

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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.