Home / 15,492.48-21,380.16-8,419.44

Finding the Fourth Proportional to 15,492.48, 21,380.16 and 8,419.44

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Solution

The fourth proportional to 15,492.48, 21,380.16 and 8,419.44 is: 11,619.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.48 : 21,380.16 = 8,419.44 : x
  2. Step 2: Convert to fraction form
    15,492.48/21,380.16 = 8,419.44/x
  3. Step 3: Cross multiply
    15,492.48x = 21,380.16 × 8,419.44
  4. Step 4: Simplify right side
    15,492.48x = 180,008,974.31
  5. Step 5: Solve for x
    x = 180,008,974.31/15,492.48
  6. Step 6: Final answer
    x = 11,619.12

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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.