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Finding the Fourth Proportional to 25,518.72, 38,278.80 and 7,050.72

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Solution

The fourth proportional to 25,518.72, 38,278.80 and 7,050.72 is: 10,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,518.72 : 38,278.80 = 7,050.72 : x
  2. Step 2: Convert to fraction form
    25,518.72/38,278.80 = 7,050.72/x
  3. Step 3: Cross multiply
    25,518.72x = 38,278.80 × 7,050.72
  4. Step 4: Simplify right side
    25,518.72x = 269,893,100.74
  5. Step 5: Solve for x
    x = 269,893,100.74/25,518.72
  6. Step 6: Final answer
    x = 10,576.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.