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Finding the Fourth Proportional to 25,486.84, 38,232.69 and 9,905.68

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Solution

The fourth proportional to 25,486.84, 38,232.69 and 9,905.68 is: 14,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,486.84 : 38,232.69 = 9,905.68 : x
  2. Step 2: Convert to fraction form
    25,486.84/38,232.69 = 9,905.68/x
  3. Step 3: Cross multiply
    25,486.84x = 38,232.69 × 9,905.68
  4. Step 4: Simplify right side
    25,486.84x = 378,720,792.68
  5. Step 5: Solve for x
    x = 378,720,792.68/25,486.84
  6. Step 6: Final answer
    x = 14,859.46

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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.