Home / 11,139.48-15,372.68-6,103.62

Finding the Fourth Proportional to 11,139.48, 15,372.68 and 6,103.62

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Solution

The fourth proportional to 11,139.48, 15,372.68 and 6,103.62 is: 8,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.48 : 15,372.68 = 6,103.62 : x
  2. Step 2: Convert to fraction form
    11,139.48/15,372.68 = 6,103.62/x
  3. Step 3: Cross multiply
    11,139.48x = 15,372.68 × 6,103.62
  4. Step 4: Simplify right side
    11,139.48x = 93,828,997.10
  5. Step 5: Solve for x
    x = 93,828,997.10/11,139.48
  6. Step 6: Final answer
    x = 8,423.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.