Home / 30,414.78-45,617.20-10,688.72

Finding the Fourth Proportional to 30,414.78, 45,617.20 and 10,688.72

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Solution

The fourth proportional to 30,414.78, 45,617.20 and 10,688.72 is: 16,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,414.78 : 45,617.20 = 10,688.72 : x
  2. Step 2: Convert to fraction form
    30,414.78/45,617.20 = 10,688.72/x
  3. Step 3: Cross multiply
    30,414.78x = 45,617.20 × 10,688.72
  4. Step 4: Simplify right side
    30,414.78x = 487,589,477.98
  5. Step 5: Solve for x
    x = 487,589,477.98/30,414.78
  6. Step 6: Final answer
    x = 16,031.33

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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.