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Finding the Fourth Proportional to 17,927.80, 26,891.70 and 4,780.22

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Solution

The fourth proportional to 17,927.80, 26,891.70 and 4,780.22 is: 7,170.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,927.80 : 26,891.70 = 4,780.22 : x
  2. Step 2: Convert to fraction form
    17,927.80/26,891.70 = 4,780.22/x
  3. Step 3: Cross multiply
    17,927.80x = 26,891.70 × 4,780.22
  4. Step 4: Simplify right side
    17,927.80x = 128,548,089.79
  5. Step 5: Solve for x
    x = 128,548,089.79/17,927.80
  6. Step 6: Final answer
    x = 7,170.32

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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.