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Finding the Fourth Proportional to 11,271.75, 15,555.74 and 6,303.75

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Solution

The fourth proportional to 11,271.75, 15,555.74 and 6,303.75 is: 8,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.75 : 15,555.74 = 6,303.75 : x
  2. Step 2: Convert to fraction form
    11,271.75/15,555.74 = 6,303.75/x
  3. Step 3: Cross multiply
    11,271.75x = 15,555.74 × 6,303.75
  4. Step 4: Simplify right side
    11,271.75x = 98,059,464.51
  5. Step 5: Solve for x
    x = 98,059,464.51/11,271.75
  6. Step 6: Final answer
    x = 8,699.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.