Home / 25,845.16-38,760.36-7,120.48

Finding the Fourth Proportional to 25,845.16, 38,760.36 and 7,120.48

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Solution

The fourth proportional to 25,845.16, 38,760.36 and 7,120.48 is: 10,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,845.16 : 38,760.36 = 7,120.48 : x
  2. Step 2: Convert to fraction form
    25,845.16/38,760.36 = 7,120.48/x
  3. Step 3: Cross multiply
    25,845.16x = 38,760.36 × 7,120.48
  4. Step 4: Simplify right side
    25,845.16x = 275,992,368.17
  5. Step 5: Solve for x
    x = 275,992,368.17/25,845.16
  6. Step 6: Final answer
    x = 10,678.69

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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.