Home / 30,405.12-45,593.10-12,865.38

Finding the Fourth Proportional to 30,405.12, 45,593.10 and 12,865.38

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Solution

The fourth proportional to 30,405.12, 45,593.10 and 12,865.38 is: 19,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,405.12 : 45,593.10 = 12,865.38 : x
  2. Step 2: Convert to fraction form
    30,405.12/45,593.10 = 12,865.38/x
  3. Step 3: Cross multiply
    30,405.12x = 45,593.10 × 12,865.38
  4. Step 4: Simplify right side
    30,405.12x = 586,572,556.88
  5. Step 5: Solve for x
    x = 586,572,556.88/30,405.12
  6. Step 6: Final answer
    x = 19,291.90

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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.