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Finding the Fourth Proportional to 32,756.88, 45,191.36 and 20,653.38

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Solution

The fourth proportional to 32,756.88, 45,191.36 and 20,653.38 is: 28,493.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,756.88 : 45,191.36 = 20,653.38 : x
  2. Step 2: Convert to fraction form
    32,756.88/45,191.36 = 20,653.38/x
  3. Step 3: Cross multiply
    32,756.88x = 45,191.36 × 20,653.38
  4. Step 4: Simplify right side
    32,756.88x = 933,354,330.80
  5. Step 5: Solve for x
    x = 933,354,330.80/32,756.88
  6. Step 6: Final answer
    x = 28,493.38

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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.