Home / 12,621.48-18,918.06-4,293.72

Finding the Fourth Proportional to 12,621.48, 18,918.06 and 4,293.72

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Solution

The fourth proportional to 12,621.48, 18,918.06 and 4,293.72 is: 6,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.48 : 18,918.06 = 4,293.72 : x
  2. Step 2: Convert to fraction form
    12,621.48/18,918.06 = 4,293.72/x
  3. Step 3: Cross multiply
    12,621.48x = 18,918.06 × 4,293.72
  4. Step 4: Simplify right side
    12,621.48x = 81,228,852.58
  5. Step 5: Solve for x
    x = 81,228,852.58/12,621.48
  6. Step 6: Final answer
    x = 6,435.76

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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.