Home / 31,563.20-47,344.80-19,889.60

Finding the Fourth Proportional to 31,563.20, 47,344.80 and 19,889.60

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Solution

The fourth proportional to 31,563.20, 47,344.80 and 19,889.60 is: 29,834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,563.20 : 47,344.80 = 19,889.60 : x
  2. Step 2: Convert to fraction form
    31,563.20/47,344.80 = 19,889.60/x
  3. Step 3: Cross multiply
    31,563.20x = 47,344.80 × 19,889.60
  4. Step 4: Simplify right side
    31,563.20x = 941,669,134.08
  5. Step 5: Solve for x
    x = 941,669,134.08/31,563.20
  6. Step 6: Final answer
    x = 29,834.40

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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.