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Finding the Fourth Proportional to 18,663.51, 25,755.63 and 10,280.01

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Solution

The fourth proportional to 18,663.51, 25,755.63 and 10,280.01 is: 14,186.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.51 : 25,755.63 = 10,280.01 : x
  2. Step 2: Convert to fraction form
    18,663.51/25,755.63 = 10,280.01/x
  3. Step 3: Cross multiply
    18,663.51x = 25,755.63 × 10,280.01
  4. Step 4: Simplify right side
    18,663.51x = 264,768,133.96
  5. Step 5: Solve for x
    x = 264,768,133.96/18,663.51
  6. Step 6: Final answer
    x = 14,186.41

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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.