Home / 20,654.34-28,502.91-11,222.88

Finding the Fourth Proportional to 20,654.34, 28,502.91 and 11,222.88

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Solution

The fourth proportional to 20,654.34, 28,502.91 and 11,222.88 is: 15,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.34 : 28,502.91 = 11,222.88 : x
  2. Step 2: Convert to fraction form
    20,654.34/28,502.91 = 11,222.88/x
  3. Step 3: Cross multiply
    20,654.34x = 28,502.91 × 11,222.88
  4. Step 4: Simplify right side
    20,654.34x = 319,884,738.58
  5. Step 5: Solve for x
    x = 319,884,738.58/20,654.34
  6. Step 6: Final answer
    x = 15,487.53

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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.