Home / 20,160.54-27,821.60-11,208.18

Finding the Fourth Proportional to 20,160.54, 27,821.60 and 11,208.18

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Solution

The fourth proportional to 20,160.54, 27,821.60 and 11,208.18 is: 15,467.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.54 : 27,821.60 = 11,208.18 : x
  2. Step 2: Convert to fraction form
    20,160.54/27,821.60 = 11,208.18/x
  3. Step 3: Cross multiply
    20,160.54x = 27,821.60 × 11,208.18
  4. Step 4: Simplify right side
    20,160.54x = 311,829,528.71
  5. Step 5: Solve for x
    x = 311,829,528.71/20,160.54
  6. Step 6: Final answer
    x = 15,467.32

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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.