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Finding the Fourth Proportional to 19,637.28, 29,455.86 and 7,958.64

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Solution

The fourth proportional to 19,637.28, 29,455.86 and 7,958.64 is: 11,937.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,637.28 : 29,455.86 = 7,958.64 : x
  2. Step 2: Convert to fraction form
    19,637.28/29,455.86 = 7,958.64/x
  3. Step 3: Cross multiply
    19,637.28x = 29,455.86 × 7,958.64
  4. Step 4: Simplify right side
    19,637.28x = 234,428,585.63
  5. Step 5: Solve for x
    x = 234,428,585.63/19,637.28
  6. Step 6: Final answer
    x = 11,937.94

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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.