Home / 11,139.21-15,371.43-6,359.70

Finding the Fourth Proportional to 11,139.21, 15,371.43 and 6,359.70

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Solution

The fourth proportional to 11,139.21, 15,371.43 and 6,359.70 is: 8,776.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.21 : 15,371.43 = 6,359.70 : x
  2. Step 2: Convert to fraction form
    11,139.21/15,371.43 = 6,359.70/x
  3. Step 3: Cross multiply
    11,139.21x = 15,371.43 × 6,359.70
  4. Step 4: Simplify right side
    11,139.21x = 97,757,683.37
  5. Step 5: Solve for x
    x = 97,757,683.37/11,139.21
  6. Step 6: Final answer
    x = 8,776.00

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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.