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Finding the Fourth Proportional to 25,485.88, 38,216.34 and 7,955.64

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Solution

The fourth proportional to 25,485.88, 38,216.34 and 7,955.64 is: 11,929.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,485.88 : 38,216.34 = 7,955.64 : x
  2. Step 2: Convert to fraction form
    25,485.88/38,216.34 = 7,955.64/x
  3. Step 3: Cross multiply
    25,485.88x = 38,216.34 × 7,955.64
  4. Step 4: Simplify right side
    25,485.88x = 304,035,443.16
  5. Step 5: Solve for x
    x = 304,035,443.16/25,485.88
  6. Step 6: Final answer
    x = 11,929.56

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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.