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Finding the Fourth Proportional to 12,607.95, 17,399.70 and 8,351.58

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Solution

The fourth proportional to 12,607.95, 17,399.70 and 8,351.58 is: 11,525.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.95 : 17,399.70 = 8,351.58 : x
  2. Step 2: Convert to fraction form
    12,607.95/17,399.70 = 8,351.58/x
  3. Step 3: Cross multiply
    12,607.95x = 17,399.70 × 8,351.58
  4. Step 4: Simplify right side
    12,607.95x = 145,314,986.53
  5. Step 5: Solve for x
    x = 145,314,986.53/12,607.95
  6. Step 6: Final answer
    x = 11,525.66

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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.