Home / 25,605.09-35,308.08-20,218.59

Finding the Fourth Proportional to 25,605.09, 35,308.08 and 20,218.59

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Solution

The fourth proportional to 25,605.09, 35,308.08 and 20,218.59 is: 27,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,605.09 : 35,308.08 = 20,218.59 : x
  2. Step 2: Convert to fraction form
    25,605.09/35,308.08 = 20,218.59/x
  3. Step 3: Cross multiply
    25,605.09x = 35,308.08 × 20,218.59
  4. Step 4: Simplify right side
    25,605.09x = 713,879,593.21
  5. Step 5: Solve for x
    x = 713,879,593.21/25,605.09
  6. Step 6: Final answer
    x = 27,880.38

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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.