Home / 31,938.45-47,905.56-13,213.59

Finding the Fourth Proportional to 31,938.45, 47,905.56 and 13,213.59

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Solution

The fourth proportional to 31,938.45, 47,905.56 and 13,213.59 is: 19,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,938.45 : 47,905.56 = 13,213.59 : x
  2. Step 2: Convert to fraction form
    31,938.45/47,905.56 = 13,213.59/x
  3. Step 3: Cross multiply
    31,938.45x = 47,905.56 × 13,213.59
  4. Step 4: Simplify right side
    31,938.45x = 633,004,428.56
  5. Step 5: Solve for x
    x = 633,004,428.56/31,938.45
  6. Step 6: Final answer
    x = 19,819.51

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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.