Home / 20,528.06-28,333.25-13,345.48

Finding the Fourth Proportional to 20,528.06, 28,333.25 and 13,345.48

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Solution

The fourth proportional to 20,528.06, 28,333.25 and 13,345.48 is: 18,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.06 : 28,333.25 = 13,345.48 : x
  2. Step 2: Convert to fraction form
    20,528.06/28,333.25 = 13,345.48/x
  3. Step 3: Cross multiply
    20,528.06x = 28,333.25 × 13,345.48
  4. Step 4: Simplify right side
    20,528.06x = 378,120,821.21
  5. Step 5: Solve for x
    x = 378,120,821.21/20,528.06
  6. Step 6: Final answer
    x = 18,419.71

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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.