Home / 12,156.27-18,219.18-6,520.02

Finding the Fourth Proportional to 12,156.27, 18,219.18 and 6,520.02

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Solution

The fourth proportional to 12,156.27, 18,219.18 and 6,520.02 is: 9,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.27 : 18,219.18 = 6,520.02 : x
  2. Step 2: Convert to fraction form
    12,156.27/18,219.18 = 6,520.02/x
  3. Step 3: Cross multiply
    12,156.27x = 18,219.18 × 6,520.02
  4. Step 4: Simplify right side
    12,156.27x = 118,789,417.98
  5. Step 5: Solve for x
    x = 118,789,417.98/12,156.27
  6. Step 6: Final answer
    x = 9,771.86

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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.