Home / 47,989.95-71,986.61-12,930.45

Finding the Fourth Proportional to 47,989.95, 71,986.61 and 12,930.45

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Solution

The fourth proportional to 47,989.95, 71,986.61 and 12,930.45 is: 19,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,989.95 : 71,986.61 = 12,930.45 : x
  2. Step 2: Convert to fraction form
    47,989.95/71,986.61 = 12,930.45/x
  3. Step 3: Cross multiply
    47,989.95x = 71,986.61 × 12,930.45
  4. Step 4: Simplify right side
    47,989.95x = 930,819,261.27
  5. Step 5: Solve for x
    x = 930,819,261.27/47,989.95
  6. Step 6: Final answer
    x = 19,396.13

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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.