Home / 25,518.15-38,277.81-7,988.52

Finding the Fourth Proportional to 25,518.15, 38,277.81 and 7,988.52

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Solution

The fourth proportional to 25,518.15, 38,277.81 and 7,988.52 is: 11,982.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,518.15 : 38,277.81 = 7,988.52 : x
  2. Step 2: Convert to fraction form
    25,518.15/38,277.81 = 7,988.52/x
  3. Step 3: Cross multiply
    25,518.15x = 38,277.81 × 7,988.52
  4. Step 4: Simplify right side
    25,518.15x = 305,783,050.74
  5. Step 5: Solve for x
    x = 305,783,050.74/25,518.15
  6. Step 6: Final answer
    x = 11,982.96

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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.