Home / 28,089.46-38,765.87-15,516.64

Finding the Fourth Proportional to 28,089.46, 38,765.87 and 15,516.64

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Solution

The fourth proportional to 28,089.46, 38,765.87 and 15,516.64 is: 21,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.46 : 38,765.87 = 15,516.64 : x
  2. Step 2: Convert to fraction form
    28,089.46/38,765.87 = 15,516.64/x
  3. Step 3: Cross multiply
    28,089.46x = 38,765.87 × 15,516.64
  4. Step 4: Simplify right side
    28,089.46x = 601,516,049.08
  5. Step 5: Solve for x
    x = 601,516,049.08/28,089.46
  6. Step 6: Final answer
    x = 21,414.30

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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.