Home / 19,979.19-27,570.33-11,475.31

Finding the Fourth Proportional to 19,979.19, 27,570.33 and 11,475.31

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Solution

The fourth proportional to 19,979.19, 27,570.33 and 11,475.31 is: 15,835.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.19 : 27,570.33 = 11,475.31 : x
  2. Step 2: Convert to fraction form
    19,979.19/27,570.33 = 11,475.31/x
  3. Step 3: Cross multiply
    19,979.19x = 27,570.33 × 11,475.31
  4. Step 4: Simplify right side
    19,979.19x = 316,378,083.55
  5. Step 5: Solve for x
    x = 316,378,083.55/19,979.19
  6. Step 6: Final answer
    x = 15,835.38

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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.