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Finding the Fourth Proportional to 28,000.82, 38,646.42 and 16,064.30

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Solution

The fourth proportional to 28,000.82, 38,646.42 and 16,064.30 is: 22,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.82 : 38,646.42 = 16,064.30 : x
  2. Step 2: Convert to fraction form
    28,000.82/38,646.42 = 16,064.30/x
  3. Step 3: Cross multiply
    28,000.82x = 38,646.42 × 16,064.30
  4. Step 4: Simplify right side
    28,000.82x = 620,827,684.81
  5. Step 5: Solve for x
    x = 620,827,684.81/28,000.82
  6. Step 6: Final answer
    x = 22,171.77

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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.