Home / 11,431.28-15,777.63-6,956.47

Finding the Fourth Proportional to 11,431.28, 15,777.63 and 6,956.47

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Solution

The fourth proportional to 11,431.28, 15,777.63 and 6,956.47 is: 9,601.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.28 : 15,777.63 = 6,956.47 : x
  2. Step 2: Convert to fraction form
    11,431.28/15,777.63 = 6,956.47/x
  3. Step 3: Cross multiply
    11,431.28x = 15,777.63 × 6,956.47
  4. Step 4: Simplify right side
    11,431.28x = 109,756,609.77
  5. Step 5: Solve for x
    x = 109,756,609.77/11,431.28
  6. Step 6: Final answer
    x = 9,601.43

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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.