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Finding the Fourth Proportional to 30,107.63, 45,161.45 and 12,567.89

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Solution

The fourth proportional to 30,107.63, 45,161.45 and 12,567.89 is: 18,851.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,107.63 : 45,161.45 = 12,567.89 : x
  2. Step 2: Convert to fraction form
    30,107.63/45,161.45 = 12,567.89/x
  3. Step 3: Cross multiply
    30,107.63x = 45,161.45 × 12,567.89
  4. Step 4: Simplify right side
    30,107.63x = 567,584,135.84
  5. Step 5: Solve for x
    x = 567,584,135.84/30,107.63
  6. Step 6: Final answer
    x = 18,851.84

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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.