Home / 19,663.88-27,135.96-13,698.86

Finding the Fourth Proportional to 19,663.88, 27,135.96 and 13,698.86

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Solution

The fourth proportional to 19,663.88, 27,135.96 and 13,698.86 is: 18,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.88 : 27,135.96 = 13,698.86 : x
  2. Step 2: Convert to fraction form
    19,663.88/27,135.96 = 13,698.86/x
  3. Step 3: Cross multiply
    19,663.88x = 27,135.96 × 13,698.86
  4. Step 4: Simplify right side
    19,663.88x = 371,731,717.01
  5. Step 5: Solve for x
    x = 371,731,717.01/19,663.88
  6. Step 6: Final answer
    x = 18,904.29

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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.