Home / 20,684.34-28,543.53-11,252.88

Finding the Fourth Proportional to 20,684.34, 28,543.53 and 11,252.88

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Solution

The fourth proportional to 20,684.34, 28,543.53 and 11,252.88 is: 15,528.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.34 : 28,543.53 = 11,252.88 : x
  2. Step 2: Convert to fraction form
    20,684.34/28,543.53 = 11,252.88/x
  3. Step 3: Cross multiply
    20,684.34x = 28,543.53 × 11,252.88
  4. Step 4: Simplify right side
    20,684.34x = 321,196,917.87
  5. Step 5: Solve for x
    x = 321,196,917.87/20,684.34
  6. Step 6: Final answer
    x = 15,528.51

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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.