Home / 30,930.90-42,682.03-18,184.50

Finding the Fourth Proportional to 30,930.90, 42,682.03 and 18,184.50

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Solution

The fourth proportional to 30,930.90, 42,682.03 and 18,184.50 is: 25,093.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.90 : 42,682.03 = 18,184.50 : x
  2. Step 2: Convert to fraction form
    30,930.90/42,682.03 = 18,184.50/x
  3. Step 3: Cross multiply
    30,930.90x = 42,682.03 × 18,184.50
  4. Step 4: Simplify right side
    30,930.90x = 776,151,374.54
  5. Step 5: Solve for x
    x = 776,151,374.54/30,930.90
  6. Step 6: Final answer
    x = 25,093.07

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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.