Home / 18,128.28-27,191.32-10,779.50

Finding the Fourth Proportional to 18,128.28, 27,191.32 and 10,779.50

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Solution

The fourth proportional to 18,128.28, 27,191.32 and 10,779.50 is: 16,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.28 : 27,191.32 = 10,779.50 : x
  2. Step 2: Convert to fraction form
    18,128.28/27,191.32 = 10,779.50/x
  3. Step 3: Cross multiply
    18,128.28x = 27,191.32 × 10,779.50
  4. Step 4: Simplify right side
    18,128.28x = 293,108,874.97
  5. Step 5: Solve for x
    x = 293,108,874.97/18,128.28
  6. Step 6: Final answer
    x = 16,168.60

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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.