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Finding the Fourth Proportional to 15,791.03, 21,792.87 and 9,077.88

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Solution

The fourth proportional to 15,791.03, 21,792.87 and 9,077.88 is: 12,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,791.03 : 21,792.87 = 9,077.88 : x
  2. Step 2: Convert to fraction form
    15,791.03/21,792.87 = 9,077.88/x
  3. Step 3: Cross multiply
    15,791.03x = 21,792.87 × 9,077.88
  4. Step 4: Simplify right side
    15,791.03x = 197,833,058.72
  5. Step 5: Solve for x
    x = 197,833,058.72/15,791.03
  6. Step 6: Final answer
    x = 12,528.20

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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.