Home / 20,368.24-28,105.32-11,415.04

Finding the Fourth Proportional to 20,368.24, 28,105.32 and 11,415.04

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Solution

The fourth proportional to 20,368.24, 28,105.32 and 11,415.04 is: 15,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.24 : 28,105.32 = 11,415.04 : x
  2. Step 2: Convert to fraction form
    20,368.24/28,105.32 = 11,415.04/x
  3. Step 3: Cross multiply
    20,368.24x = 28,105.32 × 11,415.04
  4. Step 4: Simplify right side
    20,368.24x = 320,823,352.01
  5. Step 5: Solve for x
    x = 320,823,352.01/20,368.24
  6. Step 6: Final answer
    x = 15,751.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.