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Finding the Fourth Proportional to 18,681.76, 25,782.37 and 10,725.52

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Solution

The fourth proportional to 18,681.76, 25,782.37 and 10,725.52 is: 14,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.76 : 25,782.37 = 10,725.52 : x
  2. Step 2: Convert to fraction form
    18,681.76/25,782.37 = 10,725.52/x
  3. Step 3: Cross multiply
    18,681.76x = 25,782.37 × 10,725.52
  4. Step 4: Simplify right side
    18,681.76x = 276,529,325.08
  5. Step 5: Solve for x
    x = 276,529,325.08/18,681.76
  6. Step 6: Final answer
    x = 14,802.10

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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.