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Finding the Fourth Proportional to 25,323.78, 37,985.61 and 6,855.78

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Solution

The fourth proportional to 25,323.78, 37,985.61 and 6,855.78 is: 10,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,323.78 : 37,985.61 = 6,855.78 : x
  2. Step 2: Convert to fraction form
    25,323.78/37,985.61 = 6,855.78/x
  3. Step 3: Cross multiply
    25,323.78x = 37,985.61 × 6,855.78
  4. Step 4: Simplify right side
    25,323.78x = 260,420,985.33
  5. Step 5: Solve for x
    x = 260,420,985.33/25,323.78
  6. Step 6: Final answer
    x = 10,283.65

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1.5x scale

Why These Related Problems?

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