Home / 19,878.75-29,828.34-10,992.42

Finding the Fourth Proportional to 19,878.75, 29,828.34 and 10,992.42

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Solution

The fourth proportional to 19,878.75, 29,828.34 and 10,992.42 is: 16,494.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.75 : 29,828.34 = 10,992.42 : x
  2. Step 2: Convert to fraction form
    19,878.75/29,828.34 = 10,992.42/x
  3. Step 3: Cross multiply
    19,878.75x = 29,828.34 × 10,992.42
  4. Step 4: Simplify right side
    19,878.75x = 327,885,641.18
  5. Step 5: Solve for x
    x = 327,885,641.18/19,878.75
  6. Step 6: Final answer
    x = 16,494.28

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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.