Home / 20,960.85-31,410.39-15,671.04

Finding the Fourth Proportional to 20,960.85, 31,410.39 and 15,671.04

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Solution

The fourth proportional to 20,960.85, 31,410.39 and 15,671.04 is: 23,483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.85 : 31,410.39 = 15,671.04 : x
  2. Step 2: Convert to fraction form
    20,960.85/31,410.39 = 15,671.04/x
  3. Step 3: Cross multiply
    20,960.85x = 31,410.39 × 15,671.04
  4. Step 4: Simplify right side
    20,960.85x = 492,233,478.11
  5. Step 5: Solve for x
    x = 492,233,478.11/20,960.85
  6. Step 6: Final answer
    x = 23,483.47

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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.