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Finding the Fourth Proportional to 25,720.35, 35,497.35 and 14,390.48

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Solution

The fourth proportional to 25,720.35, 35,497.35 and 14,390.48 is: 19,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720.35 : 35,497.35 = 14,390.48 : x
  2. Step 2: Convert to fraction form
    25,720.35/35,497.35 = 14,390.48/x
  3. Step 3: Cross multiply
    25,720.35x = 35,497.35 × 14,390.48
  4. Step 4: Simplify right side
    25,720.35x = 510,823,905.23
  5. Step 5: Solve for x
    x = 510,823,905.23/25,720.35
  6. Step 6: Final answer
    x = 19,860.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.