Home / 14,219.28-19,621.44-7,931.52

Finding the Fourth Proportional to 14,219.28, 19,621.44 and 7,931.52

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Solution

The fourth proportional to 14,219.28, 19,621.44 and 7,931.52 is: 10,944.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,219.28 : 19,621.44 = 7,931.52 : x
  2. Step 2: Convert to fraction form
    14,219.28/19,621.44 = 7,931.52/x
  3. Step 3: Cross multiply
    14,219.28x = 19,621.44 × 7,931.52
  4. Step 4: Simplify right side
    14,219.28x = 155,627,843.79
  5. Step 5: Solve for x
    x = 155,627,843.79/14,219.28
  6. Step 6: Final answer
    x = 10,944.85

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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.