Home / 13,234.20-19,865.70-7,387.80

Finding the Fourth Proportional to 13,234.20, 19,865.70 and 7,387.80

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Solution

The fourth proportional to 13,234.20, 19,865.70 and 7,387.80 is: 11,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,234.20 : 19,865.70 = 7,387.80 : x
  2. Step 2: Convert to fraction form
    13,234.20/19,865.70 = 7,387.80/x
  3. Step 3: Cross multiply
    13,234.20x = 19,865.70 × 7,387.80
  4. Step 4: Simplify right side
    13,234.20x = 146,763,818.46
  5. Step 5: Solve for x
    x = 146,763,818.46/13,234.20
  6. Step 6: Final answer
    x = 11,089.74

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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.