Home / 21,371.57-29,492.60-11,812.10

Finding the Fourth Proportional to 21,371.57, 29,492.60 and 11,812.10

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Solution

The fourth proportional to 21,371.57, 29,492.60 and 11,812.10 is: 16,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,371.57 : 29,492.60 = 11,812.10 : x
  2. Step 2: Convert to fraction form
    21,371.57/29,492.60 = 11,812.10/x
  3. Step 3: Cross multiply
    21,371.57x = 29,492.60 × 11,812.10
  4. Step 4: Simplify right side
    21,371.57x = 348,369,540.46
  5. Step 5: Solve for x
    x = 348,369,540.46/21,371.57
  6. Step 6: Final answer
    x = 16,300.61

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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.