Home / 30,390.03-45,575.18-10,121.39

Finding the Fourth Proportional to 30,390.03, 45,575.18 and 10,121.39

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Solution

The fourth proportional to 30,390.03, 45,575.18 and 10,121.39 is: 15,178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,390.03 : 45,575.18 = 10,121.39 : x
  2. Step 2: Convert to fraction form
    30,390.03/45,575.18 = 10,121.39/x
  3. Step 3: Cross multiply
    30,390.03x = 45,575.18 × 10,121.39
  4. Step 4: Simplify right side
    30,390.03x = 461,284,171.10
  5. Step 5: Solve for x
    x = 461,284,171.10/30,390.03
  6. Step 6: Final answer
    x = 15,178.80

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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.