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Finding the Fourth Proportional to 39,203.68, 58,812.88 and 12,926.88

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Solution

The fourth proportional to 39,203.68, 58,812.88 and 12,926.88 is: 19,392.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,203.68 : 58,812.88 = 12,926.88 : x
  2. Step 2: Convert to fraction form
    39,203.68/58,812.88 = 12,926.88/x
  3. Step 3: Cross multiply
    39,203.68x = 58,812.88 × 12,926.88
  4. Step 4: Simplify right side
    39,203.68x = 760,267,042.21
  5. Step 5: Solve for x
    x = 760,267,042.21/39,203.68
  6. Step 6: Final answer
    x = 19,392.75

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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.