Home / 12,520.14-17,270.82-8,038.86

Finding the Fourth Proportional to 12,520.14, 17,270.82 and 8,038.86

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Solution

The fourth proportional to 12,520.14, 17,270.82 and 8,038.86 is: 11,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.14 : 17,270.82 = 8,038.86 : x
  2. Step 2: Convert to fraction form
    12,520.14/17,270.82 = 8,038.86/x
  3. Step 3: Cross multiply
    12,520.14x = 17,270.82 × 8,038.86
  4. Step 4: Simplify right side
    12,520.14x = 138,837,704.07
  5. Step 5: Solve for x
    x = 138,837,704.07/12,520.14
  6. Step 6: Final answer
    x = 11,089.15

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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.