Home / 18,876.93-28,318.81-7,777.45

Finding the Fourth Proportional to 18,876.93, 28,318.81 and 7,777.45

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Solution

The fourth proportional to 18,876.93, 28,318.81 and 7,777.45 is: 11,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.93 : 28,318.81 = 7,777.45 : x
  2. Step 2: Convert to fraction form
    18,876.93/28,318.81 = 7,777.45/x
  3. Step 3: Cross multiply
    18,876.93x = 28,318.81 × 7,777.45
  4. Step 4: Simplify right side
    18,876.93x = 220,247,948.35
  5. Step 5: Solve for x
    x = 220,247,948.35/18,876.93
  6. Step 6: Final answer
    x = 11,667.58

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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.