Home / 28,076.04-42,114.10-18,734.30

Finding the Fourth Proportional to 28,076.04, 42,114.10 and 18,734.30

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Solution

The fourth proportional to 28,076.04, 42,114.10 and 18,734.30 is: 28,101.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076.04 : 42,114.10 = 18,734.30 : x
  2. Step 2: Convert to fraction form
    28,076.04/42,114.10 = 18,734.30/x
  3. Step 3: Cross multiply
    28,076.04x = 42,114.10 × 18,734.30
  4. Step 4: Simplify right side
    28,076.04x = 788,978,183.63
  5. Step 5: Solve for x
    x = 788,978,183.63/28,076.04
  6. Step 6: Final answer
    x = 28,101.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.