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Finding the Fourth Proportional to 12,779.34, 19,174.05 and 8,395.98

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Solution

The fourth proportional to 12,779.34, 19,174.05 and 8,395.98 is: 12,597.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.34 : 19,174.05 = 8,395.98 : x
  2. Step 2: Convert to fraction form
    12,779.34/19,174.05 = 8,395.98/x
  3. Step 3: Cross multiply
    12,779.34x = 19,174.05 × 8,395.98
  4. Step 4: Simplify right side
    12,779.34x = 160,984,940.32
  5. Step 5: Solve for x
    x = 160,984,940.32/12,779.34
  6. Step 6: Final answer
    x = 12,597.28

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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.