Home / 11,139.09-15,371.28-6,102.42

Finding the Fourth Proportional to 11,139.09, 15,371.28 and 6,102.42

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Solution

The fourth proportional to 11,139.09, 15,371.28 and 6,102.42 is: 8,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.09 : 15,371.28 = 6,102.42 : x
  2. Step 2: Convert to fraction form
    11,139.09/15,371.28 = 6,102.42/x
  3. Step 3: Cross multiply
    11,139.09x = 15,371.28 × 6,102.42
  4. Step 4: Simplify right side
    11,139.09x = 93,802,006.50
  5. Step 5: Solve for x
    x = 93,802,006.50/11,139.09
  6. Step 6: Final answer
    x = 8,420.98

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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.