Home / 20,896.56-28,837.08-11,465.04

Finding the Fourth Proportional to 20,896.56, 28,837.08 and 11,465.04

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Solution

The fourth proportional to 20,896.56, 28,837.08 and 11,465.04 is: 15,821.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.56 : 28,837.08 = 11,465.04 : x
  2. Step 2: Convert to fraction form
    20,896.56/28,837.08 = 11,465.04/x
  3. Step 3: Cross multiply
    20,896.56x = 28,837.08 × 11,465.04
  4. Step 4: Simplify right side
    20,896.56x = 330,618,275.68
  5. Step 5: Solve for x
    x = 330,618,275.68/20,896.56
  6. Step 6: Final answer
    x = 15,821.66

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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.