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Finding the Fourth Proportional to 25,905.81, 38,858.72 and 9,264.84

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Solution

The fourth proportional to 25,905.81, 38,858.72 and 9,264.84 is: 13,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905.81 : 38,858.72 = 9,264.84 : x
  2. Step 2: Convert to fraction form
    25,905.81/38,858.72 = 9,264.84/x
  3. Step 3: Cross multiply
    25,905.81x = 38,858.72 × 9,264.84
  4. Step 4: Simplify right side
    25,905.81x = 360,019,631.36
  5. Step 5: Solve for x
    x = 360,019,631.36/25,905.81
  6. Step 6: Final answer
    x = 13,897.25

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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.