Home / 47,903.20-71,849.32-12,840.12

Finding the Fourth Proportional to 47,903.20, 71,849.32 and 12,840.12

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Solution

The fourth proportional to 47,903.20, 71,849.32 and 12,840.12 is: 19,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,903.20 : 71,849.32 = 12,840.12 : x
  2. Step 2: Convert to fraction form
    47,903.20/71,849.32 = 12,840.12/x
  3. Step 3: Cross multiply
    47,903.20x = 71,849.32 × 12,840.12
  4. Step 4: Simplify right side
    47,903.20x = 922,553,890.72
  5. Step 5: Solve for x
    x = 922,553,890.72/47,903.20
  6. Step 6: Final answer
    x = 19,258.71

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1.5x scale

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.