Home / 30,305.34-45,464.22-12,775.20

Finding the Fourth Proportional to 30,305.34, 45,464.22 and 12,775.20

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Solution

The fourth proportional to 30,305.34, 45,464.22 and 12,775.20 is: 19,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,305.34 : 45,464.22 = 12,775.20 : x
  2. Step 2: Convert to fraction form
    30,305.34/45,464.22 = 12,775.20/x
  3. Step 3: Cross multiply
    30,305.34x = 45,464.22 × 12,775.20
  4. Step 4: Simplify right side
    30,305.34x = 580,814,503.34
  5. Step 5: Solve for x
    x = 580,814,503.34/30,305.34
  6. Step 6: Final answer
    x = 19,165.42

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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.