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Finding the Fourth Proportional to 18,510.92, 25,518.48 and 13,196.51

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Solution

The fourth proportional to 18,510.92, 25,518.48 and 13,196.51 is: 18,192.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.92 : 25,518.48 = 13,196.51 : x
  2. Step 2: Convert to fraction form
    18,510.92/25,518.48 = 13,196.51/x
  3. Step 3: Cross multiply
    18,510.92x = 25,518.48 × 13,196.51
  4. Step 4: Simplify right side
    18,510.92x = 336,754,748.91
  5. Step 5: Solve for x
    x = 336,754,748.91/18,510.92
  6. Step 6: Final answer
    x = 18,192.23

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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.