Home / 13,971.14-19,279.80-7,922.49

Finding the Fourth Proportional to 13,971.14, 19,279.80 and 7,922.49

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Solution

The fourth proportional to 13,971.14, 19,279.80 and 7,922.49 is: 10,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.14 : 19,279.80 = 7,922.49 : x
  2. Step 2: Convert to fraction form
    13,971.14/19,279.80 = 7,922.49/x
  3. Step 3: Cross multiply
    13,971.14x = 19,279.80 × 7,922.49
  4. Step 4: Simplify right side
    13,971.14x = 152,744,036.57
  5. Step 5: Solve for x
    x = 152,744,036.57/13,971.14
  6. Step 6: Final answer
    x = 10,932.82

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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.