Home / 30,090.38-45,137.62-7,903.72

Finding the Fourth Proportional to 30,090.38, 45,137.62 and 7,903.72

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Solution

The fourth proportional to 30,090.38, 45,137.62 and 7,903.72 is: 11,856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.38 : 45,137.62 = 7,903.72 : x
  2. Step 2: Convert to fraction form
    30,090.38/45,137.62 = 7,903.72/x
  3. Step 3: Cross multiply
    30,090.38x = 45,137.62 × 7,903.72
  4. Step 4: Simplify right side
    30,090.38x = 356,755,109.95
  5. Step 5: Solve for x
    x = 356,755,109.95/30,090.38
  6. Step 6: Final answer
    x = 11,856.12

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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.