Home / 14,080.64-21,120.72-4,219.76

Finding the Fourth Proportional to 14,080.64, 21,120.72 and 4,219.76

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Solution

The fourth proportional to 14,080.64, 21,120.72 and 4,219.76 is: 6,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.64 : 21,120.72 = 4,219.76 : x
  2. Step 2: Convert to fraction form
    14,080.64/21,120.72 = 4,219.76/x
  3. Step 3: Cross multiply
    14,080.64x = 21,120.72 × 4,219.76
  4. Step 4: Simplify right side
    14,080.64x = 89,124,369.43
  5. Step 5: Solve for x
    x = 89,124,369.43/14,080.64
  6. Step 6: Final answer
    x = 6,329.57

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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.