Home / 30,278.43-45,417.89-8,091.56

Finding the Fourth Proportional to 30,278.43, 45,417.89 and 8,091.56

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Solution

The fourth proportional to 30,278.43, 45,417.89 and 8,091.56 is: 12,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.43 : 45,417.89 = 8,091.56 : x
  2. Step 2: Convert to fraction form
    30,278.43/45,417.89 = 8,091.56/x
  3. Step 3: Cross multiply
    30,278.43x = 45,417.89 × 8,091.56
  4. Step 4: Simplify right side
    30,278.43x = 367,501,715.78
  5. Step 5: Solve for x
    x = 367,501,715.78/30,278.43
  6. Step 6: Final answer
    x = 12,137.41

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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.