Home / 20,210.52-27,908.16-12,669.84

Finding the Fourth Proportional to 20,210.52, 27,908.16 and 12,669.84

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Solution

The fourth proportional to 20,210.52, 27,908.16 and 12,669.84 is: 17,495.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.52 : 27,908.16 = 12,669.84 : x
  2. Step 2: Convert to fraction form
    20,210.52/27,908.16 = 12,669.84/x
  3. Step 3: Cross multiply
    20,210.52x = 27,908.16 × 12,669.84
  4. Step 4: Simplify right side
    20,210.52x = 353,591,921.89
  5. Step 5: Solve for x
    x = 353,591,921.89/20,210.52
  6. Step 6: Final answer
    x = 17,495.44

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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.