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Finding the Fourth Proportional to 18,509.62, 25,543.65 and 10,126.66

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Solution

The fourth proportional to 18,509.62, 25,543.65 and 10,126.66 is: 13,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.62 : 25,543.65 = 10,126.66 : x
  2. Step 2: Convert to fraction form
    18,509.62/25,543.65 = 10,126.66/x
  3. Step 3: Cross multiply
    18,509.62x = 25,543.65 × 10,126.66
  4. Step 4: Simplify right side
    18,509.62x = 258,671,858.71
  5. Step 5: Solve for x
    x = 258,671,858.71/18,509.62
  6. Step 6: Final answer
    x = 13,975.00

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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.