Home / 13,983.52-20,972.40-6,187.36

Finding the Fourth Proportional to 13,983.52, 20,972.40 and 6,187.36

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Solution

The fourth proportional to 13,983.52, 20,972.40 and 6,187.36 is: 9,279.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,983.52 : 20,972.40 = 6,187.36 : x
  2. Step 2: Convert to fraction form
    13,983.52/20,972.40 = 6,187.36/x
  3. Step 3: Cross multiply
    13,983.52x = 20,972.40 × 6,187.36
  4. Step 4: Simplify right side
    13,983.52x = 129,763,788.86
  5. Step 5: Solve for x
    x = 129,763,788.86/13,983.52
  6. Step 6: Final answer
    x = 9,279.77

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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.