Home / 28,631.01-42,911.16-20,760.54

Finding the Fourth Proportional to 28,631.01, 42,911.16 and 20,760.54

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Solution

The fourth proportional to 28,631.01, 42,911.16 and 20,760.54 is: 31,115.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.01 : 42,911.16 = 20,760.54 : x
  2. Step 2: Convert to fraction form
    28,631.01/42,911.16 = 20,760.54/x
  3. Step 3: Cross multiply
    28,631.01x = 42,911.16 × 20,760.54
  4. Step 4: Simplify right side
    28,631.01x = 890,858,853.63
  5. Step 5: Solve for x
    x = 890,858,853.63/28,631.01
  6. Step 6: Final answer
    x = 31,115.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.