Home / 30,278.70-45,422.10-10,563.30

Finding the Fourth Proportional to 30,278.70, 45,422.10 and 10,563.30

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Solution

The fourth proportional to 30,278.70, 45,422.10 and 10,563.30 is: 15,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.70 : 45,422.10 = 10,563.30 : x
  2. Step 2: Convert to fraction form
    30,278.70/45,422.10 = 10,563.30/x
  3. Step 3: Cross multiply
    30,278.70x = 45,422.10 × 10,563.30
  4. Step 4: Simplify right side
    30,278.70x = 479,807,268.93
  5. Step 5: Solve for x
    x = 479,807,268.93/30,278.70
  6. Step 6: Final answer
    x = 15,846.36

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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.