Home / 15,492.07-21,379.37-8,418.95

Finding the Fourth Proportional to 15,492.07, 21,379.37 and 8,418.95

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Solution

The fourth proportional to 15,492.07, 21,379.37 and 8,418.95 is: 11,618.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.07 : 21,379.37 = 8,418.95 : x
  2. Step 2: Convert to fraction form
    15,492.07/21,379.37 = 8,418.95/x
  3. Step 3: Cross multiply
    15,492.07x = 21,379.37 × 8,418.95
  4. Step 4: Simplify right side
    15,492.07x = 179,991,847.06
  5. Step 5: Solve for x
    x = 179,991,847.06/15,492.07
  6. Step 6: Final answer
    x = 11,618.32

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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.