Home / 28,106.16-42,183.48-15,638.64

Finding the Fourth Proportional to 28,106.16, 42,183.48 and 15,638.64

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Solution

The fourth proportional to 28,106.16, 42,183.48 and 15,638.64 is: 23,471.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.16 : 42,183.48 = 15,638.64 : x
  2. Step 2: Convert to fraction form
    28,106.16/42,183.48 = 15,638.64/x
  3. Step 3: Cross multiply
    28,106.16x = 42,183.48 × 15,638.64
  4. Step 4: Simplify right side
    28,106.16x = 659,692,257.67
  5. Step 5: Solve for x
    x = 659,692,257.67/28,106.16
  6. Step 6: Final answer
    x = 23,471.45

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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.