Home / 25,415.48-35,042.86-21,872.60

Finding the Fourth Proportional to 25,415.48, 35,042.86 and 21,872.60

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Solution

The fourth proportional to 25,415.48, 35,042.86 and 21,872.60 is: 30,157.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.48 : 35,042.86 = 21,872.60 : x
  2. Step 2: Convert to fraction form
    25,415.48/35,042.86 = 21,872.60/x
  3. Step 3: Cross multiply
    25,415.48x = 35,042.86 × 21,872.60
  4. Step 4: Simplify right side
    25,415.48x = 766,478,459.64
  5. Step 5: Solve for x
    x = 766,478,459.64/25,415.48
  6. Step 6: Final answer
    x = 30,157.94

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Why These Related Problems?

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