Home / 11,403.18-17,121.78-7,038.90

Finding the Fourth Proportional to 11,403.18, 17,121.78 and 7,038.90

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Solution

The fourth proportional to 11,403.18, 17,121.78 and 7,038.90 is: 10,568.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.18 : 17,121.78 = 7,038.90 : x
  2. Step 2: Convert to fraction form
    11,403.18/17,121.78 = 7,038.90/x
  3. Step 3: Cross multiply
    11,403.18x = 17,121.78 × 7,038.90
  4. Step 4: Simplify right side
    11,403.18x = 120,518,497.24
  5. Step 5: Solve for x
    x = 120,518,497.24/11,403.18
  6. Step 6: Final answer
    x = 10,568.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.