Home / 20,440.84-28,207.56-12,496.36

Finding the Fourth Proportional to 20,440.84, 28,207.56 and 12,496.36

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Solution

The fourth proportional to 20,440.84, 28,207.56 and 12,496.36 is: 17,244.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.84 : 28,207.56 = 12,496.36 : x
  2. Step 2: Convert to fraction form
    20,440.84/28,207.56 = 12,496.36/x
  3. Step 3: Cross multiply
    20,440.84x = 28,207.56 × 12,496.36
  4. Step 4: Simplify right side
    20,440.84x = 352,491,824.48
  5. Step 5: Solve for x
    x = 352,491,824.48/20,440.84
  6. Step 6: Final answer
    x = 17,244.49

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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.