Home / 27,129.88-37,400.70-19,947.12

Finding the Fourth Proportional to 27,129.88, 37,400.70 and 19,947.12

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Solution

The fourth proportional to 27,129.88, 37,400.70 and 19,947.12 is: 27,498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129.88 : 37,400.70 = 19,947.12 : x
  2. Step 2: Convert to fraction form
    27,129.88/37,400.70 = 19,947.12/x
  3. Step 3: Cross multiply
    27,129.88x = 37,400.70 × 19,947.12
  4. Step 4: Simplify right side
    27,129.88x = 746,036,063.98
  5. Step 5: Solve for x
    x = 746,036,063.98/27,129.88
  6. Step 6: Final answer
    x = 27,498.69

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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.