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Finding the Fourth Proportional to 20,954.58, 28,916.03 and 12,000.03

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Solution

The fourth proportional to 20,954.58, 28,916.03 and 12,000.03 is: 16,559.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.58 : 28,916.03 = 12,000.03 : x
  2. Step 2: Convert to fraction form
    20,954.58/28,916.03 = 12,000.03/x
  3. Step 3: Cross multiply
    20,954.58x = 28,916.03 × 12,000.03
  4. Step 4: Simplify right side
    20,954.58x = 346,993,227.48
  5. Step 5: Solve for x
    x = 346,993,227.48/20,954.58
  6. Step 6: Final answer
    x = 16,559.30

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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.