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Finding the Fourth Proportional to 15,047.60, 20,744.05 and 10,557.44

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Solution

The fourth proportional to 15,047.60, 20,744.05 and 10,557.44 is: 14,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.60 : 20,744.05 = 10,557.44 : x
  2. Step 2: Convert to fraction form
    15,047.60/20,744.05 = 10,557.44/x
  3. Step 3: Cross multiply
    15,047.60x = 20,744.05 × 10,557.44
  4. Step 4: Simplify right side
    15,047.60x = 219,004,063.23
  5. Step 5: Solve for x
    x = 219,004,063.23/15,047.60
  6. Step 6: Final answer
    x = 14,554.09

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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.