Home / 31,984.18-47,970.60-18,821.14

Finding the Fourth Proportional to 31,984.18, 47,970.60 and 18,821.14

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Solution

The fourth proportional to 31,984.18, 47,970.60 and 18,821.14 is: 28,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,984.18 : 47,970.60 = 18,821.14 : x
  2. Step 2: Convert to fraction form
    31,984.18/47,970.60 = 18,821.14/x
  3. Step 3: Cross multiply
    31,984.18x = 47,970.60 × 18,821.14
  4. Step 4: Simplify right side
    31,984.18x = 902,861,378.48
  5. Step 5: Solve for x
    x = 902,861,378.48/31,984.18
  6. Step 6: Final answer
    x = 28,228.37

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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.