Home / 20,160.69-27,818.60-11,208.16

Finding the Fourth Proportional to 20,160.69, 27,818.60 and 11,208.16

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Solution

The fourth proportional to 20,160.69, 27,818.60 and 11,208.16 is: 15,465.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.69 : 27,818.60 = 11,208.16 : x
  2. Step 2: Convert to fraction form
    20,160.69/27,818.60 = 11,208.16/x
  3. Step 3: Cross multiply
    20,160.69x = 27,818.60 × 11,208.16
  4. Step 4: Simplify right side
    20,160.69x = 311,795,319.78
  5. Step 5: Solve for x
    x = 311,795,319.78/20,160.69
  6. Step 6: Final answer
    x = 15,465.51

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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.