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Finding the Fourth Proportional to 30,238.59, 45,357.71 and 11,770.59

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Solution

The fourth proportional to 30,238.59, 45,357.71 and 11,770.59 is: 17,655.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,238.59 : 45,357.71 = 11,770.59 : x
  2. Step 2: Convert to fraction form
    30,238.59/45,357.71 = 11,770.59/x
  3. Step 3: Cross multiply
    30,238.59x = 45,357.71 × 11,770.59
  4. Step 4: Simplify right side
    30,238.59x = 533,886,948.90
  5. Step 5: Solve for x
    x = 533,886,948.90/30,238.59
  6. Step 6: Final answer
    x = 17,655.81

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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.