Home / 28,106.56-38,787.61-15,360.54

Finding the Fourth Proportional to 28,106.56, 38,787.61 and 15,360.54

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Solution

The fourth proportional to 28,106.56, 38,787.61 and 15,360.54 is: 21,197.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.56 : 38,787.61 = 15,360.54 : x
  2. Step 2: Convert to fraction form
    28,106.56/38,787.61 = 15,360.54/x
  3. Step 3: Cross multiply
    28,106.56x = 38,787.61 × 15,360.54
  4. Step 4: Simplify right side
    28,106.56x = 595,798,498.57
  5. Step 5: Solve for x
    x = 595,798,498.57/28,106.56
  6. Step 6: Final answer
    x = 21,197.84

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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.