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Finding the Fourth Proportional to 22,453.92, 30,988.48 and 12,895.06

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Solution

The fourth proportional to 22,453.92, 30,988.48 and 12,895.06 is: 17,796.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,453.92 : 30,988.48 = 12,895.06 : x
  2. Step 2: Convert to fraction form
    22,453.92/30,988.48 = 12,895.06/x
  3. Step 3: Cross multiply
    22,453.92x = 30,988.48 × 12,895.06
  4. Step 4: Simplify right side
    22,453.92x = 399,598,308.91
  5. Step 5: Solve for x
    x = 399,598,308.91/22,453.92
  6. Step 6: Final answer
    x = 17,796.37

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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.