Home / 20,538.55-28,343.61-11,584.30

Finding the Fourth Proportional to 20,538.55, 28,343.61 and 11,584.30

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Solution

The fourth proportional to 20,538.55, 28,343.61 and 11,584.30 is: 15,986.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.55 : 28,343.61 = 11,584.30 : x
  2. Step 2: Convert to fraction form
    20,538.55/28,343.61 = 11,584.30/x
  3. Step 3: Cross multiply
    20,538.55x = 28,343.61 × 11,584.30
  4. Step 4: Simplify right side
    20,538.55x = 328,340,881.32
  5. Step 5: Solve for x
    x = 328,340,881.32/20,538.55
  6. Step 6: Final answer
    x = 15,986.57

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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.