Home / 20,925.32-28,876.28-11,493.28

Finding the Fourth Proportional to 20,925.32, 28,876.28 and 11,493.28

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Solution

The fourth proportional to 20,925.32, 28,876.28 and 11,493.28 is: 15,860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.32 : 28,876.28 = 11,493.28 : x
  2. Step 2: Convert to fraction form
    20,925.32/28,876.28 = 11,493.28/x
  3. Step 3: Cross multiply
    20,925.32x = 28,876.28 × 11,493.28
  4. Step 4: Simplify right side
    20,925.32x = 331,883,171.40
  5. Step 5: Solve for x
    x = 331,883,171.40/20,925.32
  6. Step 6: Final answer
    x = 15,860.36

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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.