Home / 31,989.72-47,964.03-13,282.67

Finding the Fourth Proportional to 31,989.72, 47,964.03 and 13,282.67

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Solution

The fourth proportional to 31,989.72, 47,964.03 and 13,282.67 is: 19,915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.72 : 47,964.03 = 13,282.67 : x
  2. Step 2: Convert to fraction form
    31,989.72/47,964.03 = 13,282.67/x
  3. Step 3: Cross multiply
    31,989.72x = 47,964.03 × 13,282.67
  4. Step 4: Simplify right side
    31,989.72x = 637,090,382.36
  5. Step 5: Solve for x
    x = 637,090,382.36/31,989.72
  6. Step 6: Final answer
    x = 19,915.47

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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.