Home / 30,218.48-45,343.22-12,462.78

Finding the Fourth Proportional to 30,218.48, 45,343.22 and 12,462.78

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Solution

The fourth proportional to 30,218.48, 45,343.22 and 12,462.78 is: 18,700.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.48 : 45,343.22 = 12,462.78 : x
  2. Step 2: Convert to fraction form
    30,218.48/45,343.22 = 12,462.78/x
  3. Step 3: Cross multiply
    30,218.48x = 45,343.22 × 12,462.78
  4. Step 4: Simplify right side
    30,218.48x = 565,102,513.04
  5. Step 5: Solve for x
    x = 565,102,513.04/30,218.48
  6. Step 6: Final answer
    x = 18,700.56

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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.