Home / 15,492.48-21,379.67-8,418.93

Finding the Fourth Proportional to 15,492.48, 21,379.67 and 8,418.93

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Solution

The fourth proportional to 15,492.48, 21,379.67 and 8,418.93 is: 11,618.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.48 : 21,379.67 = 8,418.93 : x
  2. Step 2: Convert to fraction form
    15,492.48/21,379.67 = 8,418.93/x
  3. Step 3: Cross multiply
    15,492.48x = 21,379.67 × 8,418.93
  4. Step 4: Simplify right side
    15,492.48x = 179,993,903.06
  5. Step 5: Solve for x
    x = 179,993,903.06/15,492.48
  6. Step 6: Final answer
    x = 11,618.15

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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.