Home / 20,454.74-28,241.49-15,077.82

Finding the Fourth Proportional to 20,454.74, 28,241.49 and 15,077.82

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Solution

The fourth proportional to 20,454.74, 28,241.49 and 15,077.82 is: 20,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.74 : 28,241.49 = 15,077.82 : x
  2. Step 2: Convert to fraction form
    20,454.74/28,241.49 = 15,077.82/x
  3. Step 3: Cross multiply
    20,454.74x = 28,241.49 × 15,077.82
  4. Step 4: Simplify right side
    20,454.74x = 425,820,102.75
  5. Step 5: Solve for x
    x = 425,820,102.75/20,454.74
  6. Step 6: Final answer
    x = 20,817.67

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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.