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Finding the Fourth Proportional to 30,392.70, 45,567.45 and 13,760.70

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Solution

The fourth proportional to 30,392.70, 45,567.45 and 13,760.70 is: 20,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.70 : 45,567.45 = 13,760.70 : x
  2. Step 2: Convert to fraction form
    30,392.70/45,567.45 = 13,760.70/x
  3. Step 3: Cross multiply
    30,392.70x = 45,567.45 × 13,760.70
  4. Step 4: Simplify right side
    30,392.70x = 627,040,009.22
  5. Step 5: Solve for x
    x = 627,040,009.22/30,392.70
  6. Step 6: Final answer
    x = 20,631.27

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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.