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Finding the Fourth Proportional to 17,855.95, 26,779.51 and 7,328.96

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Solution

The fourth proportional to 17,855.95, 26,779.51 and 7,328.96 is: 10,991.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,855.95 : 26,779.51 = 7,328.96 : x
  2. Step 2: Convert to fraction form
    17,855.95/26,779.51 = 7,328.96/x
  3. Step 3: Cross multiply
    17,855.95x = 26,779.51 × 7,328.96
  4. Step 4: Simplify right side
    17,855.95x = 196,265,957.61
  5. Step 5: Solve for x
    x = 196,265,957.61/17,855.95
  6. Step 6: Final answer
    x = 10,991.63

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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.