Home / 19,409.90-26,791.43-12,603.74

Finding the Fourth Proportional to 19,409.90, 26,791.43 and 12,603.74

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Solution

The fourth proportional to 19,409.90, 26,791.43 and 12,603.74 is: 17,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.90 : 26,791.43 = 12,603.74 : x
  2. Step 2: Convert to fraction form
    19,409.90/26,791.43 = 12,603.74/x
  3. Step 3: Cross multiply
    19,409.90x = 26,791.43 × 12,603.74
  4. Step 4: Simplify right side
    19,409.90x = 337,672,020.97
  5. Step 5: Solve for x
    x = 337,672,020.97/19,409.90
  6. Step 6: Final answer
    x = 17,396.90

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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.