Home / 20,645.30-28,492.41-11,693.18

Finding the Fourth Proportional to 20,645.30, 28,492.41 and 11,693.18

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Solution

The fourth proportional to 20,645.30, 28,492.41 and 11,693.18 is: 16,137.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.30 : 28,492.41 = 11,693.18 : x
  2. Step 2: Convert to fraction form
    20,645.30/28,492.41 = 11,693.18/x
  3. Step 3: Cross multiply
    20,645.30x = 28,492.41 × 11,693.18
  4. Step 4: Simplify right side
    20,645.30x = 333,166,736.30
  5. Step 5: Solve for x
    x = 333,166,736.30/20,645.30
  6. Step 6: Final answer
    x = 16,137.66

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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.