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Finding the Fourth Proportional to 30,588.44, 42,220.78 and 18,020.44

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Solution

The fourth proportional to 30,588.44, 42,220.78 and 18,020.44 is: 24,873.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,588.44 : 42,220.78 = 18,020.44 : x
  2. Step 2: Convert to fraction form
    30,588.44/42,220.78 = 18,020.44/x
  3. Step 3: Cross multiply
    30,588.44x = 42,220.78 × 18,020.44
  4. Step 4: Simplify right side
    30,588.44x = 760,837,032.74
  5. Step 5: Solve for x
    x = 760,837,032.74/30,588.44
  6. Step 6: Final answer
    x = 24,873.35

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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.