Home / 18,077.79-27,114.12-6,989.70

Finding the Fourth Proportional to 18,077.79, 27,114.12 and 6,989.70

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Solution

The fourth proportional to 18,077.79, 27,114.12 and 6,989.70 is: 10,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,077.79 : 27,114.12 = 6,989.70 : x
  2. Step 2: Convert to fraction form
    18,077.79/27,114.12 = 6,989.70/x
  3. Step 3: Cross multiply
    18,077.79x = 27,114.12 × 6,989.70
  4. Step 4: Simplify right side
    18,077.79x = 189,519,564.56
  5. Step 5: Solve for x
    x = 189,519,564.56/18,077.79
  6. Step 6: Final answer
    x = 10,483.56

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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.