Home / 18,109.31-27,167.60-6,423.44

Finding the Fourth Proportional to 18,109.31, 27,167.60 and 6,423.44

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Solution

The fourth proportional to 18,109.31, 27,167.60 and 6,423.44 is: 9,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.31 : 27,167.60 = 6,423.44 : x
  2. Step 2: Convert to fraction form
    18,109.31/27,167.60 = 6,423.44/x
  3. Step 3: Cross multiply
    18,109.31x = 27,167.60 × 6,423.44
  4. Step 4: Simplify right side
    18,109.31x = 174,509,328.76
  5. Step 5: Solve for x
    x = 174,509,328.76/18,109.31
  6. Step 6: Final answer
    x = 9,636.45

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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.