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Finding the Fourth Proportional to 28,996.76, 43,502.42 and 8,220.26

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Solution

The fourth proportional to 28,996.76, 43,502.42 and 8,220.26 is: 12,332.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.76 : 43,502.42 = 8,220.26 : x
  2. Step 2: Convert to fraction form
    28,996.76/43,502.42 = 8,220.26/x
  3. Step 3: Cross multiply
    28,996.76x = 43,502.42 × 8,220.26
  4. Step 4: Simplify right side
    28,996.76x = 357,601,203.03
  5. Step 5: Solve for x
    x = 357,601,203.03/28,996.76
  6. Step 6: Final answer
    x = 12,332.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.