Home / 11,709.32-16,158.53-6,403.79

Finding the Fourth Proportional to 11,709.32, 16,158.53 and 6,403.79

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Solution

The fourth proportional to 11,709.32, 16,158.53 and 6,403.79 is: 8,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,709.32 : 16,158.53 = 6,403.79 : x
  2. Step 2: Convert to fraction form
    11,709.32/16,158.53 = 6,403.79/x
  3. Step 3: Cross multiply
    11,709.32x = 16,158.53 × 6,403.79
  4. Step 4: Simplify right side
    11,709.32x = 103,475,889.23
  5. Step 5: Solve for x
    x = 103,475,889.23/11,709.32
  6. Step 6: Final answer
    x = 8,837.06

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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.