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Finding the Fourth Proportional to 30,065.96, 45,103.04 and 12,531.68

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Solution

The fourth proportional to 30,065.96, 45,103.04 and 12,531.68 is: 18,799.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,065.96 : 45,103.04 = 12,531.68 : x
  2. Step 2: Convert to fraction form
    30,065.96/45,103.04 = 12,531.68/x
  3. Step 3: Cross multiply
    30,065.96x = 45,103.04 × 12,531.68
  4. Step 4: Simplify right side
    30,065.96x = 565,216,864.31
  5. Step 5: Solve for x
    x = 565,216,864.31/30,065.96
  6. Step 6: Final answer
    x = 18,799.23

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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.