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Finding the Fourth Proportional to 12,216.87, 16,859.07 and 7,435.08

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Solution

The fourth proportional to 12,216.87, 16,859.07 and 7,435.08 is: 10,260.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.87 : 16,859.07 = 7,435.08 : x
  2. Step 2: Convert to fraction form
    12,216.87/16,859.07 = 7,435.08/x
  3. Step 3: Cross multiply
    12,216.87x = 16,859.07 × 7,435.08
  4. Step 4: Simplify right side
    12,216.87x = 125,348,534.18
  5. Step 5: Solve for x
    x = 125,348,534.18/12,216.87
  6. Step 6: Final answer
    x = 10,260.28

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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.