Home / 20,538.56-28,341.60-11,588.24

Finding the Fourth Proportional to 20,538.56, 28,341.60 and 11,588.24

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Solution

The fourth proportional to 20,538.56, 28,341.60 and 11,588.24 is: 15,990.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.56 : 28,341.60 = 11,588.24 : x
  2. Step 2: Convert to fraction form
    20,538.56/28,341.60 = 11,588.24/x
  3. Step 3: Cross multiply
    20,538.56x = 28,341.60 × 11,588.24
  4. Step 4: Simplify right side
    20,538.56x = 328,429,262.78
  5. Step 5: Solve for x
    x = 328,429,262.78/20,538.56
  6. Step 6: Final answer
    x = 15,990.86

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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.