Home / 13,981.44-20,972.16-4,748.16

Finding the Fourth Proportional to 13,981.44, 20,972.16 and 4,748.16

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Solution

The fourth proportional to 13,981.44, 20,972.16 and 4,748.16 is: 7,122.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.44 : 20,972.16 = 4,748.16 : x
  2. Step 2: Convert to fraction form
    13,981.44/20,972.16 = 4,748.16/x
  3. Step 3: Cross multiply
    13,981.44x = 20,972.16 × 4,748.16
  4. Step 4: Simplify right side
    13,981.44x = 99,579,171.23
  5. Step 5: Solve for x
    x = 99,579,171.23/13,981.44
  6. Step 6: Final answer
    x = 7,122.24

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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.