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Finding the Fourth Proportional to 10,620.25, 14,653.07 and 6,840.32

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Solution

The fourth proportional to 10,620.25, 14,653.07 and 6,840.32 is: 9,437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.25 : 14,653.07 = 6,840.32 : x
  2. Step 2: Convert to fraction form
    10,620.25/14,653.07 = 6,840.32/x
  3. Step 3: Cross multiply
    10,620.25x = 14,653.07 × 6,840.32
  4. Step 4: Simplify right side
    10,620.25x = 100,231,605.97
  5. Step 5: Solve for x
    x = 100,231,605.97/10,620.25
  6. Step 6: Final answer
    x = 9,437.78

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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.