Home / 47,869.11-71,798.20-12,811.50

Finding the Fourth Proportional to 47,869.11, 71,798.20 and 12,811.50

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Solution

The fourth proportional to 47,869.11, 71,798.20 and 12,811.50 is: 19,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,869.11 : 71,798.20 = 12,811.50 : x
  2. Step 2: Convert to fraction form
    47,869.11/71,798.20 = 12,811.50/x
  3. Step 3: Cross multiply
    47,869.11x = 71,798.20 × 12,811.50
  4. Step 4: Simplify right side
    47,869.11x = 919,842,786.77
  5. Step 5: Solve for x
    x = 919,842,786.77/47,869.11
  6. Step 6: Final answer
    x = 19,215.79

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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.