Home / 11,791.35-16,271.64-6,485.40

Finding the Fourth Proportional to 11,791.35, 16,271.64 and 6,485.40

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Solution

The fourth proportional to 11,791.35, 16,271.64 and 6,485.40 is: 8,949.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,791.35 : 16,271.64 = 6,485.40 : x
  2. Step 2: Convert to fraction form
    11,791.35/16,271.64 = 6,485.40/x
  3. Step 3: Cross multiply
    11,791.35x = 16,271.64 × 6,485.40
  4. Step 4: Simplify right side
    11,791.35x = 105,528,094.06
  5. Step 5: Solve for x
    x = 105,528,094.06/11,791.35
  6. Step 6: Final answer
    x = 8,949.62

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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.