Home / 21,175.83-29,223.86-12,795.03

Finding the Fourth Proportional to 21,175.83, 29,223.86 and 12,795.03

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Solution

The fourth proportional to 21,175.83, 29,223.86 and 12,795.03 is: 17,657.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.83 : 29,223.86 = 12,795.03 : x
  2. Step 2: Convert to fraction form
    21,175.83/29,223.86 = 12,795.03/x
  3. Step 3: Cross multiply
    21,175.83x = 29,223.86 × 12,795.03
  4. Step 4: Simplify right side
    21,175.83x = 373,920,101.44
  5. Step 5: Solve for x
    x = 373,920,101.44/21,175.83
  6. Step 6: Final answer
    x = 17,657.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.