Home / 13,994.20-20,972.67-5,220.28

Finding the Fourth Proportional to 13,994.20, 20,972.67 and 5,220.28

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Solution

The fourth proportional to 13,994.20, 20,972.67 and 5,220.28 is: 7,823.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.20 : 20,972.67 = 5,220.28 : x
  2. Step 2: Convert to fraction form
    13,994.20/20,972.67 = 5,220.28/x
  3. Step 3: Cross multiply
    13,994.20x = 20,972.67 × 5,220.28
  4. Step 4: Simplify right side
    13,994.20x = 109,483,209.75
  5. Step 5: Solve for x
    x = 109,483,209.75/13,994.20
  6. Step 6: Final answer
    x = 7,823.47

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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.