Home / 20,445.77-28,215.42-11,492.75

Finding the Fourth Proportional to 20,445.77, 28,215.42 and 11,492.75

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Solution

The fourth proportional to 20,445.77, 28,215.42 and 11,492.75 is: 15,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.77 : 28,215.42 = 11,492.75 : x
  2. Step 2: Convert to fraction form
    20,445.77/28,215.42 = 11,492.75/x
  3. Step 3: Cross multiply
    20,445.77x = 28,215.42 × 11,492.75
  4. Step 4: Simplify right side
    20,445.77x = 324,272,768.21
  5. Step 5: Solve for x
    x = 324,272,768.21/20,445.77
  6. Step 6: Final answer
    x = 15,860.14

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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.