Home / 19,603.72-27,042.78-12,420.96

Finding the Fourth Proportional to 19,603.72, 27,042.78 and 12,420.96

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Solution

The fourth proportional to 19,603.72, 27,042.78 and 12,420.96 is: 17,134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.72 : 27,042.78 = 12,420.96 : x
  2. Step 2: Convert to fraction form
    19,603.72/27,042.78 = 12,420.96/x
  3. Step 3: Cross multiply
    19,603.72x = 27,042.78 × 12,420.96
  4. Step 4: Simplify right side
    19,603.72x = 335,897,288.67
  5. Step 5: Solve for x
    x = 335,897,288.67/19,603.72
  6. Step 6: Final answer
    x = 17,134.36

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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.