Home / 20,591.10-28,415.48-11,638.98

Finding the Fourth Proportional to 20,591.10, 28,415.48 and 11,638.98

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Solution

The fourth proportional to 20,591.10, 28,415.48 and 11,638.98 is: 16,061.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.10 : 28,415.48 = 11,638.98 : x
  2. Step 2: Convert to fraction form
    20,591.10/28,415.48 = 11,638.98/x
  3. Step 3: Cross multiply
    20,591.10x = 28,415.48 × 11,638.98
  4. Step 4: Simplify right side
    20,591.10x = 330,727,145.22
  5. Step 5: Solve for x
    x = 330,727,145.22/20,591.10
  6. Step 6: Final answer
    x = 16,061.66

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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.