Home / 30,564.36-42,181.32-17,991.60

Finding the Fourth Proportional to 30,564.36, 42,181.32 and 17,991.60

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Solution

The fourth proportional to 30,564.36, 42,181.32 and 17,991.60 is: 24,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,564.36 : 42,181.32 = 17,991.60 : x
  2. Step 2: Convert to fraction form
    30,564.36/42,181.32 = 17,991.60/x
  3. Step 3: Cross multiply
    30,564.36x = 42,181.32 × 17,991.60
  4. Step 4: Simplify right side
    30,564.36x = 758,909,436.91
  5. Step 5: Solve for x
    x = 758,909,436.91/30,564.36
  6. Step 6: Final answer
    x = 24,829.88

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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.