Home / 20,922.72-28,857.36-14,213.52

Finding the Fourth Proportional to 20,922.72, 28,857.36 and 14,213.52

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Solution

The fourth proportional to 20,922.72, 28,857.36 and 14,213.52 is: 19,603.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.72 : 28,857.36 = 14,213.52 : x
  2. Step 2: Convert to fraction form
    20,922.72/28,857.36 = 14,213.52/x
  3. Step 3: Cross multiply
    20,922.72x = 28,857.36 × 14,213.52
  4. Step 4: Simplify right side
    20,922.72x = 410,164,663.51
  5. Step 5: Solve for x
    x = 410,164,663.51/20,922.72
  6. Step 6: Final answer
    x = 19,603.79

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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.