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Finding the Fourth Proportional to 13,959.63, 20,940.46 and 4,599.72

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Solution

The fourth proportional to 13,959.63, 20,940.46 and 4,599.72 is: 6,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.63 : 20,940.46 = 4,599.72 : x
  2. Step 2: Convert to fraction form
    13,959.63/20,940.46 = 4,599.72/x
  3. Step 3: Cross multiply
    13,959.63x = 20,940.46 × 4,599.72
  4. Step 4: Simplify right side
    13,959.63x = 96,320,252.67
  5. Step 5: Solve for x
    x = 96,320,252.67/13,959.63
  6. Step 6: Final answer
    x = 6,899.91

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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.