Home / 20,646.45-28,492.48-11,693.92

Finding the Fourth Proportional to 20,646.45, 28,492.48 and 11,693.92

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Solution

The fourth proportional to 20,646.45, 28,492.48 and 11,693.92 is: 16,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.45 : 28,492.48 = 11,693.92 : x
  2. Step 2: Convert to fraction form
    20,646.45/28,492.48 = 11,693.92/x
  3. Step 3: Cross multiply
    20,646.45x = 28,492.48 × 11,693.92
  4. Step 4: Simplify right side
    20,646.45x = 333,188,781.72
  5. Step 5: Solve for x
    x = 333,188,781.72/20,646.45
  6. Step 6: Final answer
    x = 16,137.82

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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.