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Finding the Fourth Proportional to 20,601.10, 30,901.65 and 18,009.10

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Solution

The fourth proportional to 20,601.10, 30,901.65 and 18,009.10 is: 27,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.10 : 30,901.65 = 18,009.10 : x
  2. Step 2: Convert to fraction form
    20,601.10/30,901.65 = 18,009.10/x
  3. Step 3: Cross multiply
    20,601.10x = 30,901.65 × 18,009.10
  4. Step 4: Simplify right side
    20,601.10x = 556,510,905.02
  5. Step 5: Solve for x
    x = 556,510,905.02/20,601.10
  6. Step 6: Final answer
    x = 27,013.65

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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.