Home / 20,947.09-28,903.75-12,446.06

Finding the Fourth Proportional to 20,947.09, 28,903.75 and 12,446.06

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Solution

The fourth proportional to 20,947.09, 28,903.75 and 12,446.06 is: 17,173.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.09 : 28,903.75 = 12,446.06 : x
  2. Step 2: Convert to fraction form
    20,947.09/28,903.75 = 12,446.06/x
  3. Step 3: Cross multiply
    20,947.09x = 28,903.75 × 12,446.06
  4. Step 4: Simplify right side
    20,947.09x = 359,737,847.87
  5. Step 5: Solve for x
    x = 359,737,847.87/20,947.09
  6. Step 6: Final answer
    x = 17,173.65

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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.