Home / 14,105.20-21,159.64-5,219.32

Finding the Fourth Proportional to 14,105.20, 21,159.64 and 5,219.32

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Solution

The fourth proportional to 14,105.20, 21,159.64 and 5,219.32 is: 7,829.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,105.20 : 21,159.64 = 5,219.32 : x
  2. Step 2: Convert to fraction form
    14,105.20/21,159.64 = 5,219.32/x
  3. Step 3: Cross multiply
    14,105.20x = 21,159.64 × 5,219.32
  4. Step 4: Simplify right side
    14,105.20x = 110,438,932.24
  5. Step 5: Solve for x
    x = 110,438,932.24/14,105.20
  6. Step 6: Final answer
    x = 7,829.66

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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.