Home / 15,492.67-21,379.61-8,419.14

Finding the Fourth Proportional to 15,492.67, 21,379.61 and 8,419.14

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Solution

The fourth proportional to 15,492.67, 21,379.61 and 8,419.14 is: 11,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.67 : 21,379.61 = 8,419.14 : x
  2. Step 2: Convert to fraction form
    15,492.67/21,379.61 = 8,419.14/x
  3. Step 3: Cross multiply
    15,492.67x = 21,379.61 × 8,419.14
  4. Step 4: Simplify right side
    15,492.67x = 179,997,950.78
  5. Step 5: Solve for x
    x = 179,997,950.78/15,492.67
  6. Step 6: Final answer
    x = 11,618.27

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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.