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Finding the Fourth Proportional to 11,620.59, 17,430.93 and 2,855.50

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Solution

The fourth proportional to 11,620.59, 17,430.93 and 2,855.50 is: 4,283.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.59 : 17,430.93 = 2,855.50 : x
  2. Step 2: Convert to fraction form
    11,620.59/17,430.93 = 2,855.50/x
  3. Step 3: Cross multiply
    11,620.59x = 17,430.93 × 2,855.50
  4. Step 4: Simplify right side
    11,620.59x = 49,774,020.62
  5. Step 5: Solve for x
    x = 49,774,020.62/11,620.59
  6. Step 6: Final answer
    x = 4,283.26

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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.