Home / 25,487.43-35,148.54-21,243.75

Finding the Fourth Proportional to 25,487.43, 35,148.54 and 21,243.75

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Solution

The fourth proportional to 25,487.43, 35,148.54 and 21,243.75 is: 29,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,487.43 : 35,148.54 = 21,243.75 : x
  2. Step 2: Convert to fraction form
    25,487.43/35,148.54 = 21,243.75/x
  3. Step 3: Cross multiply
    25,487.43x = 35,148.54 × 21,243.75
  4. Step 4: Simplify right side
    25,487.43x = 746,686,796.63
  5. Step 5: Solve for x
    x = 746,686,796.63/25,487.43
  6. Step 6: Final answer
    x = 29,296.28

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1.5x scale

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.