Home / 30,906.84-42,651.69-18,156.60

Finding the Fourth Proportional to 30,906.84, 42,651.69 and 18,156.60

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Solution

The fourth proportional to 30,906.84, 42,651.69 and 18,156.60 is: 25,056.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906.84 : 42,651.69 = 18,156.60 : x
  2. Step 2: Convert to fraction form
    30,906.84/42,651.69 = 18,156.60/x
  3. Step 3: Cross multiply
    30,906.84x = 42,651.69 × 18,156.60
  4. Step 4: Simplify right side
    30,906.84x = 774,409,674.65
  5. Step 5: Solve for x
    x = 774,409,674.65/30,906.84
  6. Step 6: Final answer
    x = 25,056.26

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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.