Home / 15,492.81-21,379.97-8,419.23

Finding the Fourth Proportional to 15,492.81, 21,379.97 and 8,419.23

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Solution

The fourth proportional to 15,492.81, 21,379.97 and 8,419.23 is: 11,618.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,492.81 : 21,379.97 = 8,419.23 : x
  2. Step 2: Convert to fraction form
    15,492.81/21,379.97 = 8,419.23/x
  3. Step 3: Cross multiply
    15,492.81x = 21,379.97 × 8,419.23
  4. Step 4: Simplify right side
    15,492.81x = 180,002,822.06
  5. Step 5: Solve for x
    x = 180,002,822.06/15,492.81
  6. Step 6: Final answer
    x = 11,618.48

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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.