Home / 18,281.96-27,419.64-5,131.10

Finding the Fourth Proportional to 18,281.96, 27,419.64 and 5,131.10

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Solution

The fourth proportional to 18,281.96, 27,419.64 and 5,131.10 is: 7,695.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.96 : 27,419.64 = 5,131.10 : x
  2. Step 2: Convert to fraction form
    18,281.96/27,419.64 = 5,131.10/x
  3. Step 3: Cross multiply
    18,281.96x = 27,419.64 × 5,131.10
  4. Step 4: Simplify right side
    18,281.96x = 140,692,914.80
  5. Step 5: Solve for x
    x = 140,692,914.80/18,281.96
  6. Step 6: Final answer
    x = 7,695.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.