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Finding the Fourth Proportional to 28,764.58, 39,695.03 and 16,189.33

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Solution

The fourth proportional to 28,764.58, 39,695.03 and 16,189.33 is: 22,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764.58 : 39,695.03 = 16,189.33 : x
  2. Step 2: Convert to fraction form
    28,764.58/39,695.03 = 16,189.33/x
  3. Step 3: Cross multiply
    28,764.58x = 39,695.03 × 16,189.33
  4. Step 4: Simplify right side
    28,764.58x = 642,635,741.55
  5. Step 5: Solve for x
    x = 642,635,741.55/28,764.58
  6. Step 6: Final answer
    x = 22,341.22

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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.