Home / 11,818.37-16,309.35-6,440.81

Finding the Fourth Proportional to 11,818.37, 16,309.35 and 6,440.81

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Solution

The fourth proportional to 11,818.37, 16,309.35 and 6,440.81 is: 8,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.37 : 16,309.35 = 6,440.81 : x
  2. Step 2: Convert to fraction form
    11,818.37/16,309.35 = 6,440.81/x
  3. Step 3: Cross multiply
    11,818.37x = 16,309.35 × 6,440.81
  4. Step 4: Simplify right side
    11,818.37x = 105,045,324.91
  5. Step 5: Solve for x
    x = 105,045,324.91/11,818.37
  6. Step 6: Final answer
    x = 8,888.31

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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.