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Finding the Fourth Proportional to 13,222.95, 18,247.56 and 7,254.51

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Solution

The fourth proportional to 13,222.95, 18,247.56 and 7,254.51 is: 10,011.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.95 : 18,247.56 = 7,254.51 : x
  2. Step 2: Convert to fraction form
    13,222.95/18,247.56 = 7,254.51/x
  3. Step 3: Cross multiply
    13,222.95x = 18,247.56 × 7,254.51
  4. Step 4: Simplify right side
    13,222.95x = 132,377,106.50
  5. Step 5: Solve for x
    x = 132,377,106.50/13,222.95
  6. Step 6: Final answer
    x = 10,011.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.