Home / 19,879.17-27,419.46-13,502.19

Finding the Fourth Proportional to 19,879.17, 27,419.46 and 13,502.19

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Solution

The fourth proportional to 19,879.17, 27,419.46 and 13,502.19 is: 18,623.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.17 : 27,419.46 = 13,502.19 : x
  2. Step 2: Convert to fraction form
    19,879.17/27,419.46 = 13,502.19/x
  3. Step 3: Cross multiply
    19,879.17x = 27,419.46 × 13,502.19
  4. Step 4: Simplify right side
    19,879.17x = 370,222,886.76
  5. Step 5: Solve for x
    x = 370,222,886.76/19,879.17
  6. Step 6: Final answer
    x = 18,623.66

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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.