Home / 19,968.78-29,932.11-7,480.65

Finding the Fourth Proportional to 19,968.78, 29,932.11 and 7,480.65

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Solution

The fourth proportional to 19,968.78, 29,932.11 and 7,480.65 is: 11,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,968.78 : 29,932.11 = 7,480.65 : x
  2. Step 2: Convert to fraction form
    19,968.78/29,932.11 = 7,480.65/x
  3. Step 3: Cross multiply
    19,968.78x = 29,932.11 × 7,480.65
  4. Step 4: Simplify right side
    19,968.78x = 223,911,638.67
  5. Step 5: Solve for x
    x = 223,911,638.67/19,968.78
  6. Step 6: Final answer
    x = 11,213.09

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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.