Home / 8,427.37-12,621.34-6,660.51

Finding the Fourth Proportional to 8,427.37, 12,621.34 and 6,660.51

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Solution

The fourth proportional to 8,427.37, 12,621.34 and 6,660.51 is: 9,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.37 : 12,621.34 = 6,660.51 : x
  2. Step 2: Convert to fraction form
    8,427.37/12,621.34 = 6,660.51/x
  3. Step 3: Cross multiply
    8,427.37x = 12,621.34 × 6,660.51
  4. Step 4: Simplify right side
    8,427.37x = 84,064,544.63
  5. Step 5: Solve for x
    x = 84,064,544.63/8,427.37
  6. Step 6: Final answer
    x = 9,975.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.