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Finding the Fourth Proportional to 39,613, 59,432.73 and 12,960.20

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Solution

The fourth proportional to 39,613, 59,432.73 and 12,960.20 is: 19,444.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,613 : 59,432.73 = 12,960.20 : x
  2. Step 2: Convert to fraction form
    39,613/59,432.73 = 12,960.20/x
  3. Step 3: Cross multiply
    39,613x = 59,432.73 × 12,960.20
  4. Step 4: Simplify right side
    39,613x = 770,260,067.35
  5. Step 5: Solve for x
    x = 770,260,067.35/39,613
  6. Step 6: Final answer
    x = 19,444.63

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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.