Home / 28,664.88-42,921.18-19,290.48

Finding the Fourth Proportional to 28,664.88, 42,921.18 and 19,290.48

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Solution

The fourth proportional to 28,664.88, 42,921.18 and 19,290.48 is: 28,884.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.88 : 42,921.18 = 19,290.48 : x
  2. Step 2: Convert to fraction form
    28,664.88/42,921.18 = 19,290.48/x
  3. Step 3: Cross multiply
    28,664.88x = 42,921.18 × 19,290.48
  4. Step 4: Simplify right side
    28,664.88x = 827,970,164.37
  5. Step 5: Solve for x
    x = 827,970,164.37/28,664.88
  6. Step 6: Final answer
    x = 28,884.48

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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.