Home / 20,538.63-28,343.72-12,047.27

Finding the Fourth Proportional to 20,538.63, 28,343.72 and 12,047.27

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Solution

The fourth proportional to 20,538.63, 28,343.72 and 12,047.27 is: 16,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.63 : 28,343.72 = 12,047.27 : x
  2. Step 2: Convert to fraction form
    20,538.63/28,343.72 = 12,047.27/x
  3. Step 3: Cross multiply
    20,538.63x = 28,343.72 × 12,047.27
  4. Step 4: Simplify right side
    20,538.63x = 341,464,336.04
  5. Step 5: Solve for x
    x = 341,464,336.04/20,538.63
  6. Step 6: Final answer
    x = 16,625.47

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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.