Home / 12,820.15-19,239.96-8,650.27

Finding the Fourth Proportional to 12,820.15, 19,239.96 and 8,650.27

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Solution

The fourth proportional to 12,820.15, 19,239.96 and 8,650.27 is: 12,981.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.15 : 19,239.96 = 8,650.27 : x
  2. Step 2: Convert to fraction form
    12,820.15/19,239.96 = 8,650.27/x
  3. Step 3: Cross multiply
    12,820.15x = 19,239.96 × 8,650.27
  4. Step 4: Simplify right side
    12,820.15x = 166,430,848.79
  5. Step 5: Solve for x
    x = 166,430,848.79/12,820.15
  6. Step 6: Final answer
    x = 12,981.97

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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.