Home / 19,750.72-27,255.20-11,368.64

Finding the Fourth Proportional to 19,750.72, 27,255.20 and 11,368.64

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Solution

The fourth proportional to 19,750.72, 27,255.20 and 11,368.64 is: 15,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,750.72 : 27,255.20 = 11,368.64 : x
  2. Step 2: Convert to fraction form
    19,750.72/27,255.20 = 11,368.64/x
  3. Step 3: Cross multiply
    19,750.72x = 27,255.20 × 11,368.64
  4. Step 4: Simplify right side
    19,750.72x = 309,854,556.93
  5. Step 5: Solve for x
    x = 309,854,556.93/19,750.72
  6. Step 6: Final answer
    x = 15,688.27

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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.