Home / 11,603.18-16,012.13-6,428.90

Finding the Fourth Proportional to 11,603.18, 16,012.13 and 6,428.90

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Solution

The fourth proportional to 11,603.18, 16,012.13 and 6,428.90 is: 8,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,603.18 : 16,012.13 = 6,428.90 : x
  2. Step 2: Convert to fraction form
    11,603.18/16,012.13 = 6,428.90/x
  3. Step 3: Cross multiply
    11,603.18x = 16,012.13 × 6,428.90
  4. Step 4: Simplify right side
    11,603.18x = 102,940,270.35
  5. Step 5: Solve for x
    x = 102,940,270.35/11,603.18
  6. Step 6: Final answer
    x = 8,871.73

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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.