Home / 20,492.54-28,281.15-11,418.50

Finding the Fourth Proportional to 20,492.54, 28,281.15 and 11,418.50

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Solution

The fourth proportional to 20,492.54, 28,281.15 and 11,418.50 is: 15,758.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.54 : 28,281.15 = 11,418.50 : x
  2. Step 2: Convert to fraction form
    20,492.54/28,281.15 = 11,418.50/x
  3. Step 3: Cross multiply
    20,492.54x = 28,281.15 × 11,418.50
  4. Step 4: Simplify right side
    20,492.54x = 322,928,469.92
  5. Step 5: Solve for x
    x = 322,928,469.92/20,492.54
  6. Step 6: Final answer
    x = 15,758.34

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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.