Home / 19,293.36-28,918.80-12,621.84

Finding the Fourth Proportional to 19,293.36, 28,918.80 and 12,621.84

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Solution

The fourth proportional to 19,293.36, 28,918.80 and 12,621.84 is: 18,918.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.36 : 28,918.80 = 12,621.84 : x
  2. Step 2: Convert to fraction form
    19,293.36/28,918.80 = 12,621.84/x
  3. Step 3: Cross multiply
    19,293.36x = 28,918.80 × 12,621.84
  4. Step 4: Simplify right side
    19,293.36x = 365,008,466.59
  5. Step 5: Solve for x
    x = 365,008,466.59/19,293.36
  6. Step 6: Final answer
    x = 18,918.86

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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.