Home / 20,591.26-28,415.81-11,638.74

Finding the Fourth Proportional to 20,591.26, 28,415.81 and 11,638.74

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Solution

The fourth proportional to 20,591.26, 28,415.81 and 11,638.74 is: 16,061.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.26 : 28,415.81 = 11,638.74 : x
  2. Step 2: Convert to fraction form
    20,591.26/28,415.81 = 11,638.74/x
  3. Step 3: Cross multiply
    20,591.26x = 28,415.81 × 11,638.74
  4. Step 4: Simplify right side
    20,591.26x = 330,724,224.48
  5. Step 5: Solve for x
    x = 330,724,224.48/20,591.26
  6. Step 6: Final answer
    x = 16,061.39

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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.