Home / 31,787.89-47,697.32-13,073.54

Finding the Fourth Proportional to 31,787.89, 47,697.32 and 13,073.54

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Solution

The fourth proportional to 31,787.89, 47,697.32 and 13,073.54 is: 19,616.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.89 : 47,697.32 = 13,073.54 : x
  2. Step 2: Convert to fraction form
    31,787.89/47,697.32 = 13,073.54/x
  3. Step 3: Cross multiply
    31,787.89x = 47,697.32 × 13,073.54
  4. Step 4: Simplify right side
    31,787.89x = 623,572,615.11
  5. Step 5: Solve for x
    x = 623,572,615.11/31,787.89
  6. Step 6: Final answer
    x = 19,616.67

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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.