Home / 20,958.89-28,923.28-12,006.56

Finding the Fourth Proportional to 20,958.89, 28,923.28 and 12,006.56

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Solution

The fourth proportional to 20,958.89, 28,923.28 and 12,006.56 is: 16,569.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.89 : 28,923.28 = 12,006.56 : x
  2. Step 2: Convert to fraction form
    20,958.89/28,923.28 = 12,006.56/x
  3. Step 3: Cross multiply
    20,958.89x = 28,923.28 × 12,006.56
  4. Step 4: Simplify right side
    20,958.89x = 347,269,139.01
  5. Step 5: Solve for x
    x = 347,269,139.01/20,958.89
  6. Step 6: Final answer
    x = 16,569.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.