Home / 30,625.54-42,267.16-18,686.34

Finding the Fourth Proportional to 30,625.54, 42,267.16 and 18,686.34

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Solution

The fourth proportional to 30,625.54, 42,267.16 and 18,686.34 is: 25,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,625.54 : 42,267.16 = 18,686.34 : x
  2. Step 2: Convert to fraction form
    30,625.54/42,267.16 = 18,686.34/x
  3. Step 3: Cross multiply
    30,625.54x = 42,267.16 × 18,686.34
  4. Step 4: Simplify right side
    30,625.54x = 789,818,581.55
  5. Step 5: Solve for x
    x = 789,818,581.55/30,625.54
  6. Step 6: Final answer
    x = 25,789.54

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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.