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Finding the Fourth Proportional to 30,241.92, 45,386.88 and 12,723.84

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Solution

The fourth proportional to 30,241.92, 45,386.88 and 12,723.84 is: 19,095.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,241.92 : 45,386.88 = 12,723.84 : x
  2. Step 2: Convert to fraction form
    30,241.92/45,386.88 = 12,723.84/x
  3. Step 3: Cross multiply
    30,241.92x = 45,386.88 × 12,723.84
  4. Step 4: Simplify right side
    30,241.92x = 577,495,399.22
  5. Step 5: Solve for x
    x = 577,495,399.22/30,241.92
  6. Step 6: Final answer
    x = 19,095.86

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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.