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Finding the Fourth Proportional to 15,015.56, 20,673.02 and 12,358.40

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Solution

The fourth proportional to 15,015.56, 20,673.02 and 12,358.40 is: 17,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.56 : 20,673.02 = 12,358.40 : x
  2. Step 2: Convert to fraction form
    15,015.56/20,673.02 = 12,358.40/x
  3. Step 3: Cross multiply
    15,015.56x = 20,673.02 × 12,358.40
  4. Step 4: Simplify right side
    15,015.56x = 255,485,450.37
  5. Step 5: Solve for x
    x = 255,485,450.37/15,015.56
  6. Step 6: Final answer
    x = 17,014.71

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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.