Home / 19,915.86-29,879.74-11,157.06

Finding the Fourth Proportional to 19,915.86, 29,879.74 and 11,157.06

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Solution

The fourth proportional to 19,915.86, 29,879.74 and 11,157.06 is: 16,738.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.86 : 29,879.74 = 11,157.06 : x
  2. Step 2: Convert to fraction form
    19,915.86/29,879.74 = 11,157.06/x
  3. Step 3: Cross multiply
    19,915.86x = 29,879.74 × 11,157.06
  4. Step 4: Simplify right side
    19,915.86x = 333,370,051.96
  5. Step 5: Solve for x
    x = 333,370,051.96/19,915.86
  6. Step 6: Final answer
    x = 16,738.92

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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.