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Finding the Fourth Proportional to 26,397.90, 39,602.78 and 8,867.28

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Solution

The fourth proportional to 26,397.90, 39,602.78 and 8,867.28 is: 13,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,397.90 : 39,602.78 = 8,867.28 : x
  2. Step 2: Convert to fraction form
    26,397.90/39,602.78 = 8,867.28/x
  3. Step 3: Cross multiply
    26,397.90x = 39,602.78 × 8,867.28
  4. Step 4: Simplify right side
    26,397.90x = 351,168,939.04
  5. Step 5: Solve for x
    x = 351,168,939.04/26,397.90
  6. Step 6: Final answer
    x = 13,302.91

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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.