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Finding the Fourth Proportional to 14,798, 20,421.24 and 8,174

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Solution

The fourth proportional to 14,798, 20,421.24 and 8,174 is: 11,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,798 : 20,421.24 = 8,174 : x
  2. Step 2: Convert to fraction form
    14,798/20,421.24 = 8,174/x
  3. Step 3: Cross multiply
    14,798x = 20,421.24 × 8,174
  4. Step 4: Simplify right side
    14,798x = 166,923,215.76
  5. Step 5: Solve for x
    x = 166,923,215.76/14,798
  6. Step 6: Final answer
    x = 11,280.12

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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.