Home / 30,571.72-42,196.46-18,641.64

Finding the Fourth Proportional to 30,571.72, 42,196.46 and 18,641.64

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Solution

The fourth proportional to 30,571.72, 42,196.46 and 18,641.64 is: 25,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.72 : 42,196.46 = 18,641.64 : x
  2. Step 2: Convert to fraction form
    30,571.72/42,196.46 = 18,641.64/x
  3. Step 3: Cross multiply
    30,571.72x = 42,196.46 × 18,641.64
  4. Step 4: Simplify right side
    30,571.72x = 786,611,216.59
  5. Step 5: Solve for x
    x = 786,611,216.59/30,571.72
  6. Step 6: Final answer
    x = 25,730.03

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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.