Home / 28,168.48-42,205.20-18,292.96

Finding the Fourth Proportional to 28,168.48, 42,205.20 and 18,292.96

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Solution

The fourth proportional to 28,168.48, 42,205.20 and 18,292.96 is: 27,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.48 : 42,205.20 = 18,292.96 : x
  2. Step 2: Convert to fraction form
    28,168.48/42,205.20 = 18,292.96/x
  3. Step 3: Cross multiply
    28,168.48x = 42,205.20 × 18,292.96
  4. Step 4: Simplify right side
    28,168.48x = 772,058,035.39
  5. Step 5: Solve for x
    x = 772,058,035.39/28,168.48
  6. Step 6: Final answer
    x = 27,408.58

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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.