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Finding the Fourth Proportional to 30,287.20, 45,422.70 and 10,563.70

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Solution

The fourth proportional to 30,287.20, 45,422.70 and 10,563.70 is: 15,842.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.20 : 45,422.70 = 10,563.70 : x
  2. Step 2: Convert to fraction form
    30,287.20/45,422.70 = 10,563.70/x
  3. Step 3: Cross multiply
    30,287.20x = 45,422.70 × 10,563.70
  4. Step 4: Simplify right side
    30,287.20x = 479,831,775.99
  5. Step 5: Solve for x
    x = 479,831,775.99/30,287.20
  6. Step 6: Final answer
    x = 15,842.72

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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.