Home / 25,848.75-38,771.81-7,128.96

Finding the Fourth Proportional to 25,848.75, 38,771.81 and 7,128.96

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Solution

The fourth proportional to 25,848.75, 38,771.81 and 7,128.96 is: 10,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,848.75 : 38,771.81 = 7,128.96 : x
  2. Step 2: Convert to fraction form
    25,848.75/38,771.81 = 7,128.96/x
  3. Step 3: Cross multiply
    25,848.75x = 38,771.81 × 7,128.96
  4. Step 4: Simplify right side
    25,848.75x = 276,402,682.62
  5. Step 5: Solve for x
    x = 276,402,682.62/25,848.75
  6. Step 6: Final answer
    x = 10,693.08

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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.