Home / 28,040.20-42,017.10-18,795.40

Finding the Fourth Proportional to 28,040.20, 42,017.10 and 18,795.40

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Solution

The fourth proportional to 28,040.20, 42,017.10 and 18,795.40 is: 28,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.20 : 42,017.10 = 18,795.40 : x
  2. Step 2: Convert to fraction form
    28,040.20/42,017.10 = 18,795.40/x
  3. Step 3: Cross multiply
    28,040.20x = 42,017.10 × 18,795.40
  4. Step 4: Simplify right side
    28,040.20x = 789,728,201.34
  5. Step 5: Solve for x
    x = 789,728,201.34/28,040.20
  6. Step 6: Final answer
    x = 28,164.14

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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.