Home / 20,446.17-28,216.17-12,492.78

Finding the Fourth Proportional to 20,446.17, 28,216.17 and 12,492.78

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Solution

The fourth proportional to 20,446.17, 28,216.17 and 12,492.78 is: 17,240.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446.17 : 28,216.17 = 12,492.78 : x
  2. Step 2: Convert to fraction form
    20,446.17/28,216.17 = 12,492.78/x
  3. Step 3: Cross multiply
    20,446.17x = 28,216.17 × 12,492.78
  4. Step 4: Simplify right side
    20,446.17x = 352,498,492.29
  5. Step 5: Solve for x
    x = 352,498,492.29/20,446.17
  6. Step 6: Final answer
    x = 17,240.32

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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.