Home / 28,002.72-42,003.90-7,226.40

Finding the Fourth Proportional to 28,002.72, 42,003.90 and 7,226.40

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Solution

The fourth proportional to 28,002.72, 42,003.90 and 7,226.40 is: 10,839.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.72 : 42,003.90 = 7,226.40 : x
  2. Step 2: Convert to fraction form
    28,002.72/42,003.90 = 7,226.40/x
  3. Step 3: Cross multiply
    28,002.72x = 42,003.90 × 7,226.40
  4. Step 4: Simplify right side
    28,002.72x = 303,536,982.96
  5. Step 5: Solve for x
    x = 303,536,982.96/28,002.72
  6. Step 6: Final answer
    x = 10,839.55

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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.