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Finding the Fourth Proportional to 30,358.69, 45,527.10 and 12,829.89

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Solution

The fourth proportional to 30,358.69, 45,527.10 and 12,829.89 is: 19,240.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,358.69 : 45,527.10 = 12,829.89 : x
  2. Step 2: Convert to fraction form
    30,358.69/45,527.10 = 12,829.89/x
  3. Step 3: Cross multiply
    30,358.69x = 45,527.10 × 12,829.89
  4. Step 4: Simplify right side
    30,358.69x = 584,107,614.25
  5. Step 5: Solve for x
    x = 584,107,614.25/30,358.69
  6. Step 6: Final answer
    x = 19,240.21

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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.