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Finding the Fourth Proportional to 17,870.80, 26,806.39 and 5,390.93

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Solution

The fourth proportional to 17,870.80, 26,806.39 and 5,390.93 is: 8,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,870.80 : 26,806.39 = 5,390.93 : x
  2. Step 2: Convert to fraction form
    17,870.80/26,806.39 = 5,390.93/x
  3. Step 3: Cross multiply
    17,870.80x = 26,806.39 × 5,390.93
  4. Step 4: Simplify right side
    17,870.80x = 144,511,435.63
  5. Step 5: Solve for x
    x = 144,511,435.63/17,870.80
  6. Step 6: Final answer
    x = 8,086.46

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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.