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Finding the Fourth Proportional to 14,280.18, 19,706.91 and 7,992.54

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Solution

The fourth proportional to 14,280.18, 19,706.91 and 7,992.54 is: 11,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.18 : 19,706.91 = 7,992.54 : x
  2. Step 2: Convert to fraction form
    14,280.18/19,706.91 = 7,992.54/x
  3. Step 3: Cross multiply
    14,280.18x = 19,706.91 × 7,992.54
  4. Step 4: Simplify right side
    14,280.18x = 157,508,266.45
  5. Step 5: Solve for x
    x = 157,508,266.45/14,280.18
  6. Step 6: Final answer
    x = 11,029.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.