Home / 13,820.28-19,066.58-8,505.88

Finding the Fourth Proportional to 13,820.28, 19,066.58 and 8,505.88

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Solution

The fourth proportional to 13,820.28, 19,066.58 and 8,505.88 is: 11,734.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.28 : 19,066.58 = 8,505.88 : x
  2. Step 2: Convert to fraction form
    13,820.28/19,066.58 = 8,505.88/x
  3. Step 3: Cross multiply
    13,820.28x = 19,066.58 × 8,505.88
  4. Step 4: Simplify right side
    13,820.28x = 162,178,041.49
  5. Step 5: Solve for x
    x = 162,178,041.49/13,820.28
  6. Step 6: Final answer
    x = 11,734.79

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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.