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Finding the Fourth Proportional to 12,643.98, 18,955.02 and 6,793.74

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Solution

The fourth proportional to 12,643.98, 18,955.02 and 6,793.74 is: 10,184.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.98 : 18,955.02 = 6,793.74 : x
  2. Step 2: Convert to fraction form
    12,643.98/18,955.02 = 6,793.74/x
  3. Step 3: Cross multiply
    12,643.98x = 18,955.02 × 6,793.74
  4. Step 4: Simplify right side
    12,643.98x = 128,775,477.57
  5. Step 5: Solve for x
    x = 128,775,477.57/12,643.98
  6. Step 6: Final answer
    x = 10,184.73

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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.