Home / 20,588.49-28,412.01-11,157.03

Finding the Fourth Proportional to 20,588.49, 28,412.01 and 11,157.03

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Solution

The fourth proportional to 20,588.49, 28,412.01 and 11,157.03 is: 15,396.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.49 : 28,412.01 = 11,157.03 : x
  2. Step 2: Convert to fraction form
    20,588.49/28,412.01 = 11,157.03/x
  3. Step 3: Cross multiply
    20,588.49x = 28,412.01 × 11,157.03
  4. Step 4: Simplify right side
    20,588.49x = 316,993,647.93
  5. Step 5: Solve for x
    x = 316,993,647.93/20,588.49
  6. Step 6: Final answer
    x = 15,396.64

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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.