Home / 19,879.19-27,437.13-13,165.10

Finding the Fourth Proportional to 19,879.19, 27,437.13 and 13,165.10

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Solution

The fourth proportional to 19,879.19, 27,437.13 and 13,165.10 is: 18,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.19 : 27,437.13 = 13,165.10 : x
  2. Step 2: Convert to fraction form
    19,879.19/27,437.13 = 13,165.10/x
  3. Step 3: Cross multiply
    19,879.19x = 27,437.13 × 13,165.10
  4. Step 4: Simplify right side
    19,879.19x = 361,212,422.98
  5. Step 5: Solve for x
    x = 361,212,422.98/19,879.19
  6. Step 6: Final answer
    x = 18,170.38

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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.