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Finding the Fourth Proportional to 30,615.14, 45,917.31 and 8,423.17

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Solution

The fourth proportional to 30,615.14, 45,917.31 and 8,423.17 is: 12,633.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.14 : 45,917.31 = 8,423.17 : x
  2. Step 2: Convert to fraction form
    30,615.14/45,917.31 = 8,423.17/x
  3. Step 3: Cross multiply
    30,615.14x = 45,917.31 × 8,423.17
  4. Step 4: Simplify right side
    30,615.14x = 386,769,308.07
  5. Step 5: Solve for x
    x = 386,769,308.07/30,615.14
  6. Step 6: Final answer
    x = 12,633.27

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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.