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Finding the Fourth Proportional to 11,392.40, 17,050.20 and 10,470.80

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Solution

The fourth proportional to 11,392.40, 17,050.20 and 10,470.80 is: 15,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.40 : 17,050.20 = 10,470.80 : x
  2. Step 2: Convert to fraction form
    11,392.40/17,050.20 = 10,470.80/x
  3. Step 3: Cross multiply
    11,392.40x = 17,050.20 × 10,470.80
  4. Step 4: Simplify right side
    11,392.40x = 178,529,234.16
  5. Step 5: Solve for x
    x = 178,529,234.16/11,392.40
  6. Step 6: Final answer
    x = 15,670.91

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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.