Home / 20,878.25-31,344.09-17,935.52

Finding the Fourth Proportional to 20,878.25, 31,344.09 and 17,935.52

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Solution

The fourth proportional to 20,878.25, 31,344.09 and 17,935.52 is: 26,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.25 : 31,344.09 = 17,935.52 : x
  2. Step 2: Convert to fraction form
    20,878.25/31,344.09 = 17,935.52/x
  3. Step 3: Cross multiply
    20,878.25x = 31,344.09 × 17,935.52
  4. Step 4: Simplify right side
    20,878.25x = 562,172,396.36
  5. Step 5: Solve for x
    x = 562,172,396.36/20,878.25
  6. Step 6: Final answer
    x = 26,926.23

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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.