Home / 12,213.18-18,285.18-8,040.64

Finding the Fourth Proportional to 12,213.18, 18,285.18 and 8,040.64

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Solution

The fourth proportional to 12,213.18, 18,285.18 and 8,040.64 is: 12,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.18 : 18,285.18 = 8,040.64 : x
  2. Step 2: Convert to fraction form
    12,213.18/18,285.18 = 8,040.64/x
  3. Step 3: Cross multiply
    12,213.18x = 18,285.18 × 8,040.64
  4. Step 4: Simplify right side
    12,213.18x = 147,024,549.72
  5. Step 5: Solve for x
    x = 147,024,549.72/12,213.18
  6. Step 6: Final answer
    x = 12,038.19

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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.