Home / 20,751.24-28,636.80-11,320.01

Finding the Fourth Proportional to 20,751.24, 28,636.80 and 11,320.01

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Solution

The fourth proportional to 20,751.24, 28,636.80 and 11,320.01 is: 15,621.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.24 : 28,636.80 = 11,320.01 : x
  2. Step 2: Convert to fraction form
    20,751.24/28,636.80 = 11,320.01/x
  3. Step 3: Cross multiply
    20,751.24x = 28,636.80 × 11,320.01
  4. Step 4: Simplify right side
    20,751.24x = 324,168,862.37
  5. Step 5: Solve for x
    x = 324,168,862.37/20,751.24
  6. Step 6: Final answer
    x = 15,621.66

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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.