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Finding the Fourth Proportional to 28,777.68, 39,654 and 22,062.96

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Solution

The fourth proportional to 28,777.68, 39,654 and 22,062.96 is: 30,401.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.68 : 39,654 = 22,062.96 : x
  2. Step 2: Convert to fraction form
    28,777.68/39,654 = 22,062.96/x
  3. Step 3: Cross multiply
    28,777.68x = 39,654 × 22,062.96
  4. Step 4: Simplify right side
    28,777.68x = 874,884,615.84
  5. Step 5: Solve for x
    x = 874,884,615.84/28,777.68
  6. Step 6: Final answer
    x = 30,401.50

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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.