Home / 20,681.64-28,540.74-11,250.24

Finding the Fourth Proportional to 20,681.64, 28,540.74 and 11,250.24

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Solution

The fourth proportional to 20,681.64, 28,540.74 and 11,250.24 is: 15,525.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.64 : 28,540.74 = 11,250.24 : x
  2. Step 2: Convert to fraction form
    20,681.64/28,540.74 = 11,250.24/x
  3. Step 3: Cross multiply
    20,681.64x = 28,540.74 × 11,250.24
  4. Step 4: Simplify right side
    20,681.64x = 321,090,174.78
  5. Step 5: Solve for x
    x = 321,090,174.78/20,681.64
  6. Step 6: Final answer
    x = 15,525.37

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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.