Home / 30,278.05-45,421.26-8,092.15

Finding the Fourth Proportional to 30,278.05, 45,421.26 and 8,092.15

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Solution

The fourth proportional to 30,278.05, 45,421.26 and 8,092.15 is: 12,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.05 : 45,421.26 = 8,092.15 : x
  2. Step 2: Convert to fraction form
    30,278.05/45,421.26 = 8,092.15/x
  3. Step 3: Cross multiply
    30,278.05x = 45,421.26 × 8,092.15
  4. Step 4: Simplify right side
    30,278.05x = 367,555,649.11
  5. Step 5: Solve for x
    x = 367,555,649.11/30,278.05
  6. Step 6: Final answer
    x = 12,139.34

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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.