Home / 9,921.40-13,690.38-5,941.96

Finding the Fourth Proportional to 9,921.40, 13,690.38 and 5,941.96

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Solution

The fourth proportional to 9,921.40, 13,690.38 and 5,941.96 is: 8,199.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.40 : 13,690.38 = 5,941.96 : x
  2. Step 2: Convert to fraction form
    9,921.40/13,690.38 = 5,941.96/x
  3. Step 3: Cross multiply
    9,921.40x = 13,690.38 × 5,941.96
  4. Step 4: Simplify right side
    9,921.40x = 81,347,690.34
  5. Step 5: Solve for x
    x = 81,347,690.34/9,921.40
  6. Step 6: Final answer
    x = 8,199.21

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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.