Home / 28,195.89-38,908.65-15,619.73

Finding the Fourth Proportional to 28,195.89, 38,908.65 and 15,619.73

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Solution

The fourth proportional to 28,195.89, 38,908.65 and 15,619.73 is: 21,554.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.89 : 38,908.65 = 15,619.73 : x
  2. Step 2: Convert to fraction form
    28,195.89/38,908.65 = 15,619.73/x
  3. Step 3: Cross multiply
    28,195.89x = 38,908.65 × 15,619.73
  4. Step 4: Simplify right side
    28,195.89x = 607,742,529.57
  5. Step 5: Solve for x
    x = 607,742,529.57/28,195.89
  6. Step 6: Final answer
    x = 21,554.29

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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.