Home / 19,103.98-26,342.18-12,380.78

Finding the Fourth Proportional to 19,103.98, 26,342.18 and 12,380.78

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Solution

The fourth proportional to 19,103.98, 26,342.18 and 12,380.78 is: 17,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,103.98 : 26,342.18 = 12,380.78 : x
  2. Step 2: Convert to fraction form
    19,103.98/26,342.18 = 12,380.78/x
  3. Step 3: Cross multiply
    19,103.98x = 26,342.18 × 12,380.78
  4. Step 4: Simplify right side
    19,103.98x = 326,136,735.30
  5. Step 5: Solve for x
    x = 326,136,735.30/19,103.98
  6. Step 6: Final answer
    x = 17,071.66

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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.