Home / 11,520.93-15,899.18-6,485.33

Finding the Fourth Proportional to 11,520.93, 15,899.18 and 6,485.33

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Solution

The fourth proportional to 11,520.93, 15,899.18 and 6,485.33 is: 8,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.93 : 15,899.18 = 6,485.33 : x
  2. Step 2: Convert to fraction form
    11,520.93/15,899.18 = 6,485.33/x
  3. Step 3: Cross multiply
    11,520.93x = 15,899.18 × 6,485.33
  4. Step 4: Simplify right side
    11,520.93x = 103,111,364.96
  5. Step 5: Solve for x
    x = 103,111,364.96/11,520.93
  6. Step 6: Final answer
    x = 8,949.92

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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.