Home / 31,915.62-47,872.08-13,190.58

Finding the Fourth Proportional to 31,915.62, 47,872.08 and 13,190.58

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Solution

The fourth proportional to 31,915.62, 47,872.08 and 13,190.58 is: 19,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.62 : 47,872.08 = 13,190.58 : x
  2. Step 2: Convert to fraction form
    31,915.62/47,872.08 = 13,190.58/x
  3. Step 3: Cross multiply
    31,915.62x = 47,872.08 × 13,190.58
  4. Step 4: Simplify right side
    31,915.62x = 631,460,501.01
  5. Step 5: Solve for x
    x = 631,460,501.01/31,915.62
  6. Step 6: Final answer
    x = 19,785.31

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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.