Home / 19,285.90-28,899.08-13,021.36

Finding the Fourth Proportional to 19,285.90, 28,899.08 and 13,021.36

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Solution

The fourth proportional to 19,285.90, 28,899.08 and 13,021.36 is: 19,511.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.90 : 28,899.08 = 13,021.36 : x
  2. Step 2: Convert to fraction form
    19,285.90/28,899.08 = 13,021.36/x
  3. Step 3: Cross multiply
    19,285.90x = 28,899.08 × 13,021.36
  4. Step 4: Simplify right side
    19,285.90x = 376,305,235.82
  5. Step 5: Solve for x
    x = 376,305,235.82/19,285.90
  6. Step 6: Final answer
    x = 19,511.94

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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.