Home / 20,182.60-27,852.78-12,220.32

Finding the Fourth Proportional to 20,182.60, 27,852.78 and 12,220.32

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Solution

The fourth proportional to 20,182.60, 27,852.78 and 12,220.32 is: 16,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.60 : 27,852.78 = 12,220.32 : x
  2. Step 2: Convert to fraction form
    20,182.60/27,852.78 = 12,220.32/x
  3. Step 3: Cross multiply
    20,182.60x = 27,852.78 × 12,220.32
  4. Step 4: Simplify right side
    20,182.60x = 340,369,884.49
  5. Step 5: Solve for x
    x = 340,369,884.49/20,182.60
  6. Step 6: Final answer
    x = 16,864.52

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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.