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Finding the Fourth Proportional to 17,776.76, 26,670.08 and 7,779.71

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Solution

The fourth proportional to 17,776.76, 26,670.08 and 7,779.71 is: 11,671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,776.76 : 26,670.08 = 7,779.71 : x
  2. Step 2: Convert to fraction form
    17,776.76/26,670.08 = 7,779.71/x
  3. Step 3: Cross multiply
    17,776.76x = 26,670.08 × 7,779.71
  4. Step 4: Simplify right side
    17,776.76x = 207,485,515.85
  5. Step 5: Solve for x
    x = 207,485,515.85/17,776.76
  6. Step 6: Final answer
    x = 11,671.73

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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.