Home / 30,220.68-45,279.84-18,509.43

Finding the Fourth Proportional to 30,220.68, 45,279.84 and 18,509.43

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Solution

The fourth proportional to 30,220.68, 45,279.84 and 18,509.43 is: 27,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.68 : 45,279.84 = 18,509.43 : x
  2. Step 2: Convert to fraction form
    30,220.68/45,279.84 = 18,509.43/x
  3. Step 3: Cross multiply
    30,220.68x = 45,279.84 × 18,509.43
  4. Step 4: Simplify right side
    30,220.68x = 838,104,028.89
  5. Step 5: Solve for x
    x = 838,104,028.89/30,220.68
  6. Step 6: Final answer
    x = 27,732.80

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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.