Home / 30,550.79-42,115.93-21,448.44

Finding the Fourth Proportional to 30,550.79, 42,115.93 and 21,448.44

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Solution

The fourth proportional to 30,550.79, 42,115.93 and 21,448.44 is: 29,567.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,550.79 : 42,115.93 = 21,448.44 : x
  2. Step 2: Convert to fraction form
    30,550.79/42,115.93 = 21,448.44/x
  3. Step 3: Cross multiply
    30,550.79x = 42,115.93 × 21,448.44
  4. Step 4: Simplify right side
    30,550.79x = 903,320,944.03
  5. Step 5: Solve for x
    x = 903,320,944.03/30,550.79
  6. Step 6: Final answer
    x = 29,567.84

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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.