Home / 20,156.32-27,813.90-11,203.60

Finding the Fourth Proportional to 20,156.32, 27,813.90 and 11,203.60

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Solution

The fourth proportional to 20,156.32, 27,813.90 and 11,203.60 is: 15,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.32 : 27,813.90 = 11,203.60 : x
  2. Step 2: Convert to fraction form
    20,156.32/27,813.90 = 11,203.60/x
  3. Step 3: Cross multiply
    20,156.32x = 27,813.90 × 11,203.60
  4. Step 4: Simplify right side
    20,156.32x = 311,615,810.04
  5. Step 5: Solve for x
    x = 311,615,810.04/20,156.32
  6. Step 6: Final answer
    x = 15,459.96

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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.