Home / 28,106.82-38,788.14-15,360.54

Finding the Fourth Proportional to 28,106.82, 38,788.14 and 15,360.54

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Solution

The fourth proportional to 28,106.82, 38,788.14 and 15,360.54 is: 21,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.82 : 38,788.14 = 15,360.54 : x
  2. Step 2: Convert to fraction form
    28,106.82/38,788.14 = 15,360.54/x
  3. Step 3: Cross multiply
    28,106.82x = 38,788.14 × 15,360.54
  4. Step 4: Simplify right side
    28,106.82x = 595,806,776.00
  5. Step 5: Solve for x
    x = 595,806,776.00/28,106.82
  6. Step 6: Final answer
    x = 21,197.94

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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.