Home / 31,929.20-47,877.78-18,606.50

Finding the Fourth Proportional to 31,929.20, 47,877.78 and 18,606.50

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Solution

The fourth proportional to 31,929.20, 47,877.78 and 18,606.50 is: 27,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,929.20 : 47,877.78 = 18,606.50 : x
  2. Step 2: Convert to fraction form
    31,929.20/47,877.78 = 18,606.50/x
  3. Step 3: Cross multiply
    31,929.20x = 47,877.78 × 18,606.50
  4. Step 4: Simplify right side
    31,929.20x = 890,837,913.57
  5. Step 5: Solve for x
    x = 890,837,913.57/31,929.20
  6. Step 6: Final answer
    x = 27,900.41

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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.