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Finding the Fourth Proportional to 30,912.70, 42,659.02 and 17,483.45

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Solution

The fourth proportional to 30,912.70, 42,659.02 and 17,483.45 is: 24,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.70 : 42,659.02 = 17,483.45 : x
  2. Step 2: Convert to fraction form
    30,912.70/42,659.02 = 17,483.45/x
  3. Step 3: Cross multiply
    30,912.70x = 42,659.02 × 17,483.45
  4. Step 4: Simplify right side
    30,912.70x = 745,826,843.22
  5. Step 5: Solve for x
    x = 745,826,843.22/30,912.70
  6. Step 6: Final answer
    x = 24,126.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.