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Finding the Fourth Proportional to 13,325.40, 18,389 and 7,276.04

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Solution

The fourth proportional to 13,325.40, 18,389 and 7,276.04 is: 10,040.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.40 : 18,389 = 7,276.04 : x
  2. Step 2: Convert to fraction form
    13,325.40/18,389 = 7,276.04/x
  3. Step 3: Cross multiply
    13,325.40x = 18,389 × 7,276.04
  4. Step 4: Simplify right side
    13,325.40x = 133,799,099.56
  5. Step 5: Solve for x
    x = 133,799,099.56/13,325.40
  6. Step 6: Final answer
    x = 10,040.91

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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.