Home / 18,814.47-28,221.75-4,774.50

Finding the Fourth Proportional to 18,814.47, 28,221.75 and 4,774.50

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Solution

The fourth proportional to 18,814.47, 28,221.75 and 4,774.50 is: 7,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.47 : 28,221.75 = 4,774.50 : x
  2. Step 2: Convert to fraction form
    18,814.47/28,221.75 = 4,774.50/x
  3. Step 3: Cross multiply
    18,814.47x = 28,221.75 × 4,774.50
  4. Step 4: Simplify right side
    18,814.47x = 134,744,745.38
  5. Step 5: Solve for x
    x = 134,744,745.38/18,814.47
  6. Step 6: Final answer
    x = 7,161.76

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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.