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Finding the Fourth Proportional to 18,509.76, 25,543.86 and 10,126.26

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Solution

The fourth proportional to 18,509.76, 25,543.86 and 10,126.26 is: 13,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.76 : 25,543.86 = 10,126.26 : x
  2. Step 2: Convert to fraction form
    18,509.76/25,543.86 = 10,126.26/x
  3. Step 3: Cross multiply
    18,509.76x = 25,543.86 × 10,126.26
  4. Step 4: Simplify right side
    18,509.76x = 258,663,767.76
  5. Step 5: Solve for x
    x = 258,663,767.76/18,509.76
  6. Step 6: Final answer
    x = 13,974.45

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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.