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Finding the Fourth Proportional to 19,149.18, 28,706.70 and 7,459.70

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Solution

The fourth proportional to 19,149.18, 28,706.70 and 7,459.70 is: 11,182.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.18 : 28,706.70 = 7,459.70 : x
  2. Step 2: Convert to fraction form
    19,149.18/28,706.70 = 7,459.70/x
  3. Step 3: Cross multiply
    19,149.18x = 28,706.70 × 7,459.70
  4. Step 4: Simplify right side
    19,149.18x = 214,143,369.99
  5. Step 5: Solve for x
    x = 214,143,369.99/19,149.18
  6. Step 6: Final answer
    x = 11,182.90

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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.