Home / 14,219.44-19,621.12-7,931.44

Finding the Fourth Proportional to 14,219.44, 19,621.12 and 7,931.44

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Solution

The fourth proportional to 14,219.44, 19,621.12 and 7,931.44 is: 10,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.44 : 19,621.12 = 7,931.44 : x
  2. Step 2: Convert to fraction form
    14,219.44/19,621.12 = 7,931.44/x
  3. Step 3: Cross multiply
    14,219.44x = 19,621.12 × 7,931.44
  4. Step 4: Simplify right side
    14,219.44x = 155,623,736.01
  5. Step 5: Solve for x
    x = 155,623,736.01/14,219.44
  6. Step 6: Final answer
    x = 10,944.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.