Home / 9,430.20-14,145.30-8,919.90

Finding the Fourth Proportional to 9,430.20, 14,145.30 and 8,919.90

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Solution

The fourth proportional to 9,430.20, 14,145.30 and 8,919.90 is: 13,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,430.20 : 14,145.30 = 8,919.90 : x
  2. Step 2: Convert to fraction form
    9,430.20/14,145.30 = 8,919.90/x
  3. Step 3: Cross multiply
    9,430.20x = 14,145.30 × 8,919.90
  4. Step 4: Simplify right side
    9,430.20x = 126,174,661.47
  5. Step 5: Solve for x
    x = 126,174,661.47/9,430.20
  6. Step 6: Final answer
    x = 13,379.85

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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.