Home / 19,091.30-28,650.51-7,404.21

Finding the Fourth Proportional to 19,091.30, 28,650.51 and 7,404.21

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Solution

The fourth proportional to 19,091.30, 28,650.51 and 7,404.21 is: 11,111.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.30 : 28,650.51 = 7,404.21 : x
  2. Step 2: Convert to fraction form
    19,091.30/28,650.51 = 7,404.21/x
  3. Step 3: Cross multiply
    19,091.30x = 28,650.51 × 7,404.21
  4. Step 4: Simplify right side
    19,091.30x = 212,134,392.65
  5. Step 5: Solve for x
    x = 212,134,392.65/19,091.30
  6. Step 6: Final answer
    x = 11,111.58

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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.