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Finding the Fourth Proportional to 12,658.74, 19,000.02 and 6,423.22

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Solution

The fourth proportional to 12,658.74, 19,000.02 and 6,423.22 is: 9,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.74 : 19,000.02 = 6,423.22 : x
  2. Step 2: Convert to fraction form
    12,658.74/19,000.02 = 6,423.22/x
  3. Step 3: Cross multiply
    12,658.74x = 19,000.02 × 6,423.22
  4. Step 4: Simplify right side
    12,658.74x = 122,041,355.96
  5. Step 5: Solve for x
    x = 122,041,355.96/12,658.74
  6. Step 6: Final answer
    x = 9,640.88

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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.