Home / 11,397.40-17,081.70-8,315.80

Finding the Fourth Proportional to 11,397.40, 17,081.70 and 8,315.80

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Solution

The fourth proportional to 11,397.40, 17,081.70 and 8,315.80 is: 12,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.40 : 17,081.70 = 8,315.80 : x
  2. Step 2: Convert to fraction form
    11,397.40/17,081.70 = 8,315.80/x
  3. Step 3: Cross multiply
    11,397.40x = 17,081.70 × 8,315.80
  4. Step 4: Simplify right side
    11,397.40x = 142,048,000.86
  5. Step 5: Solve for x
    x = 142,048,000.86/11,397.40
  6. Step 6: Final answer
    x = 12,463.19

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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.