Home / 18,923.14-28,368.21-7,822.90

Finding the Fourth Proportional to 18,923.14, 28,368.21 and 7,822.90

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Solution

The fourth proportional to 18,923.14, 28,368.21 and 7,822.90 is: 11,727.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.14 : 28,368.21 = 7,822.90 : x
  2. Step 2: Convert to fraction form
    18,923.14/28,368.21 = 7,822.90/x
  3. Step 3: Cross multiply
    18,923.14x = 28,368.21 × 7,822.90
  4. Step 4: Simplify right side
    18,923.14x = 221,921,670.01
  5. Step 5: Solve for x
    x = 221,921,670.01/18,923.14
  6. Step 6: Final answer
    x = 11,727.53

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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.