Home / 13,980.91-20,972.07-4,621.77

Finding the Fourth Proportional to 13,980.91, 20,972.07 and 4,621.77

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Solution

The fourth proportional to 13,980.91, 20,972.07 and 4,621.77 is: 6,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.91 : 20,972.07 = 4,621.77 : x
  2. Step 2: Convert to fraction form
    13,980.91/20,972.07 = 4,621.77/x
  3. Step 3: Cross multiply
    13,980.91x = 20,972.07 × 4,621.77
  4. Step 4: Simplify right side
    13,980.91x = 96,928,083.96
  5. Step 5: Solve for x
    x = 96,928,083.96/13,980.91
  6. Step 6: Final answer
    x = 6,932.89

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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.