Home / 20,625.58-28,448.60-18,929.55

Finding the Fourth Proportional to 20,625.58, 28,448.60 and 18,929.55

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Solution

The fourth proportional to 20,625.58, 28,448.60 and 18,929.55 is: 26,109.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,625.58 : 28,448.60 = 18,929.55 : x
  2. Step 2: Convert to fraction form
    20,625.58/28,448.60 = 18,929.55/x
  3. Step 3: Cross multiply
    20,625.58x = 28,448.60 × 18,929.55
  4. Step 4: Simplify right side
    20,625.58x = 538,519,196.13
  5. Step 5: Solve for x
    x = 538,519,196.13/20,625.58
  6. Step 6: Final answer
    x = 26,109.29

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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.