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Finding the Fourth Proportional to 30,323.40, 45,491.22 and 12,793.20

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Solution

The fourth proportional to 30,323.40, 45,491.22 and 12,793.20 is: 19,192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,323.40 : 45,491.22 = 12,793.20 : x
  2. Step 2: Convert to fraction form
    30,323.40/45,491.22 = 12,793.20/x
  3. Step 3: Cross multiply
    30,323.40x = 45,491.22 × 12,793.20
  4. Step 4: Simplify right side
    30,323.40x = 581,978,275.70
  5. Step 5: Solve for x
    x = 581,978,275.70/30,323.40
  6. Step 6: Final answer
    x = 19,192.38

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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.