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Finding the Fourth Proportional to 28,523.49, 42,785.81 and 8,802.05

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Solution

The fourth proportional to 28,523.49, 42,785.81 and 8,802.05 is: 13,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,523.49 : 42,785.81 = 8,802.05 : x
  2. Step 2: Convert to fraction form
    28,523.49/42,785.81 = 8,802.05/x
  3. Step 3: Cross multiply
    28,523.49x = 42,785.81 × 8,802.05
  4. Step 4: Simplify right side
    28,523.49x = 376,602,580.97
  5. Step 5: Solve for x
    x = 376,602,580.97/28,523.49
  6. Step 6: Final answer
    x = 13,203.24

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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.