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Finding the Fourth Proportional to 14,791.51, 20,412.76 and 8,077.49

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Solution

The fourth proportional to 14,791.51, 20,412.76 and 8,077.49 is: 11,147.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,791.51 : 20,412.76 = 8,077.49 : x
  2. Step 2: Convert to fraction form
    14,791.51/20,412.76 = 8,077.49/x
  3. Step 3: Cross multiply
    14,791.51x = 20,412.76 × 8,077.49
  4. Step 4: Simplify right side
    14,791.51x = 164,883,864.77
  5. Step 5: Solve for x
    x = 164,883,864.77/14,791.51
  6. Step 6: Final answer
    x = 11,147.20

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Double scale
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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.