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Finding the Fourth Proportional to 25,448.78, 38,173.17 and 13,784.78

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Solution

The fourth proportional to 25,448.78, 38,173.17 and 13,784.78 is: 20,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,448.78 : 38,173.17 = 13,784.78 : x
  2. Step 2: Convert to fraction form
    25,448.78/38,173.17 = 13,784.78/x
  3. Step 3: Cross multiply
    25,448.78x = 38,173.17 × 13,784.78
  4. Step 4: Simplify right side
    25,448.78x = 526,208,800.06
  5. Step 5: Solve for x
    x = 526,208,800.06/25,448.78
  6. Step 6: Final answer
    x = 20,677.17

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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.