Home / 30,138.32-45,192.90-10,409.96

Finding the Fourth Proportional to 30,138.32, 45,192.90 and 10,409.96

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Solution

The fourth proportional to 30,138.32, 45,192.90 and 10,409.96 is: 15,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.32 : 45,192.90 = 10,409.96 : x
  2. Step 2: Convert to fraction form
    30,138.32/45,192.90 = 10,409.96/x
  3. Step 3: Cross multiply
    30,138.32x = 45,192.90 × 10,409.96
  4. Step 4: Simplify right side
    30,138.32x = 470,456,281.28
  5. Step 5: Solve for x
    x = 470,456,281.28/30,138.32
  6. Step 6: Final answer
    x = 15,609.90

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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.