Home / 20,113.12-27,757.20-13,045.60

Finding the Fourth Proportional to 20,113.12, 27,757.20 and 13,045.60

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Solution

The fourth proportional to 20,113.12, 27,757.20 and 13,045.60 is: 18,003.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.12 : 27,757.20 = 13,045.60 : x
  2. Step 2: Convert to fraction form
    20,113.12/27,757.20 = 13,045.60/x
  3. Step 3: Cross multiply
    20,113.12x = 27,757.20 × 13,045.60
  4. Step 4: Simplify right side
    20,113.12x = 362,109,328.32
  5. Step 5: Solve for x
    x = 362,109,328.32/20,113.12
  6. Step 6: Final answer
    x = 18,003.64

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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.