Home / 20,492.37-28,279.95-11,418.35

Finding the Fourth Proportional to 20,492.37, 28,279.95 and 11,418.35

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Solution

The fourth proportional to 20,492.37, 28,279.95 and 11,418.35 is: 15,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.37 : 28,279.95 = 11,418.35 : x
  2. Step 2: Convert to fraction form
    20,492.37/28,279.95 = 11,418.35/x
  3. Step 3: Cross multiply
    20,492.37x = 28,279.95 × 11,418.35
  4. Step 4: Simplify right side
    20,492.37x = 322,910,225.68
  5. Step 5: Solve for x
    x = 322,910,225.68/20,492.37
  6. Step 6: Final answer
    x = 15,757.58

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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.