Home / 20,606.14-28,436.34-11,174.70

Finding the Fourth Proportional to 20,606.14, 28,436.34 and 11,174.70

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Solution

The fourth proportional to 20,606.14, 28,436.34 and 11,174.70 is: 15,421.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.14 : 28,436.34 = 11,174.70 : x
  2. Step 2: Convert to fraction form
    20,606.14/28,436.34 = 11,174.70/x
  3. Step 3: Cross multiply
    20,606.14x = 28,436.34 × 11,174.70
  4. Step 4: Simplify right side
    20,606.14x = 317,767,568.60
  5. Step 5: Solve for x
    x = 317,767,568.60/20,606.14
  6. Step 6: Final answer
    x = 15,421.01

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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.