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Finding the Fourth Proportional to 28,677, 39,574.26 and 16,101.76

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Solution

The fourth proportional to 28,677, 39,574.26 and 16,101.76 is: 22,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677 : 39,574.26 = 16,101.76 : x
  2. Step 2: Convert to fraction form
    28,677/39,574.26 = 16,101.76/x
  3. Step 3: Cross multiply
    28,677x = 39,574.26 × 16,101.76
  4. Step 4: Simplify right side
    28,677x = 637,215,236.70
  5. Step 5: Solve for x
    x = 637,215,236.70/28,677
  6. Step 6: Final answer
    x = 22,220.43

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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.