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Finding the Fourth Proportional to 18,015.70, 27,039.55 and 10,610.90

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Solution

The fourth proportional to 18,015.70, 27,039.55 and 10,610.90 is: 15,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.70 : 27,039.55 = 10,610.90 : x
  2. Step 2: Convert to fraction form
    18,015.70/27,039.55 = 10,610.90/x
  3. Step 3: Cross multiply
    18,015.70x = 27,039.55 × 10,610.90
  4. Step 4: Simplify right side
    18,015.70x = 286,913,961.10
  5. Step 5: Solve for x
    x = 286,913,961.10/18,015.70
  6. Step 6: Final answer
    x = 15,925.77

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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.