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Finding the Fourth Proportional to 28,602.12, 39,472.76 and 16,028.76

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Solution

The fourth proportional to 28,602.12, 39,472.76 and 16,028.76 is: 22,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,602.12 : 39,472.76 = 16,028.76 : x
  2. Step 2: Convert to fraction form
    28,602.12/39,472.76 = 16,028.76/x
  3. Step 3: Cross multiply
    28,602.12x = 39,472.76 × 16,028.76
  4. Step 4: Simplify right side
    28,602.12x = 632,699,396.58
  5. Step 5: Solve for x
    x = 632,699,396.58/28,602.12
  6. Step 6: Final answer
    x = 22,120.72

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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.