Home / 30,688.22-42,351.96-18,753.84

Finding the Fourth Proportional to 30,688.22, 42,351.96 and 18,753.84

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Solution

The fourth proportional to 30,688.22, 42,351.96 and 18,753.84 is: 25,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,688.22 : 42,351.96 = 18,753.84 : x
  2. Step 2: Convert to fraction form
    30,688.22/42,351.96 = 18,753.84/x
  3. Step 3: Cross multiply
    30,688.22x = 42,351.96 × 18,753.84
  4. Step 4: Simplify right side
    30,688.22x = 794,261,951.85
  5. Step 5: Solve for x
    x = 794,261,951.85/30,688.22
  6. Step 6: Final answer
    x = 25,881.65

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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.