Home / 20,270.16-30,415.32-11,379.96

Finding the Fourth Proportional to 20,270.16, 30,415.32 and 11,379.96

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Solution

The fourth proportional to 20,270.16, 30,415.32 and 11,379.96 is: 17,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.16 : 30,415.32 = 11,379.96 : x
  2. Step 2: Convert to fraction form
    20,270.16/30,415.32 = 11,379.96/x
  3. Step 3: Cross multiply
    20,270.16x = 30,415.32 × 11,379.96
  4. Step 4: Simplify right side
    20,270.16x = 346,125,124.99
  5. Step 5: Solve for x
    x = 346,125,124.99/20,270.16
  6. Step 6: Final answer
    x = 17,075.60

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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.