Home / 11,818.10-17,730.20-4,423.12

Finding the Fourth Proportional to 11,818.10, 17,730.20 and 4,423.12

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Solution

The fourth proportional to 11,818.10, 17,730.20 and 4,423.12 is: 6,635.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.10 : 17,730.20 = 4,423.12 : x
  2. Step 2: Convert to fraction form
    11,818.10/17,730.20 = 4,423.12/x
  3. Step 3: Cross multiply
    11,818.10x = 17,730.20 × 4,423.12
  4. Step 4: Simplify right side
    11,818.10x = 78,422,802.22
  5. Step 5: Solve for x
    x = 78,422,802.22/11,818.10
  6. Step 6: Final answer
    x = 6,635.82

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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.