Home / 11,139.21-15,371.56-6,103.45

Finding the Fourth Proportional to 11,139.21, 15,371.56 and 6,103.45

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Solution

The fourth proportional to 11,139.21, 15,371.56 and 6,103.45 is: 8,422.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.21 : 15,371.56 = 6,103.45 : x
  2. Step 2: Convert to fraction form
    11,139.21/15,371.56 = 6,103.45/x
  3. Step 3: Cross multiply
    11,139.21x = 15,371.56 × 6,103.45
  4. Step 4: Simplify right side
    11,139.21x = 93,819,547.88
  5. Step 5: Solve for x
    x = 93,819,547.88/11,139.21
  6. Step 6: Final answer
    x = 8,422.46

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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.