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Finding the Fourth Proportional to 12,900.66, 17,803.11 and 7,522.95

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Solution

The fourth proportional to 12,900.66, 17,803.11 and 7,522.95 is: 10,381.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.66 : 17,803.11 = 7,522.95 : x
  2. Step 2: Convert to fraction form
    12,900.66/17,803.11 = 7,522.95/x
  3. Step 3: Cross multiply
    12,900.66x = 17,803.11 × 7,522.95
  4. Step 4: Simplify right side
    12,900.66x = 133,931,906.37
  5. Step 5: Solve for x
    x = 133,931,906.37/12,900.66
  6. Step 6: Final answer
    x = 10,381.79

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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.