Home / 12,210.05-18,316.90-4,420.69

Finding the Fourth Proportional to 12,210.05, 18,316.90 and 4,420.69

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Solution

The fourth proportional to 12,210.05, 18,316.90 and 4,420.69 is: 6,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.05 : 18,316.90 = 4,420.69 : x
  2. Step 2: Convert to fraction form
    12,210.05/18,316.90 = 4,420.69/x
  3. Step 3: Cross multiply
    12,210.05x = 18,316.90 × 4,420.69
  4. Step 4: Simplify right side
    12,210.05x = 80,973,336.66
  5. Step 5: Solve for x
    x = 80,973,336.66/12,210.05
  6. Step 6: Final answer
    x = 6,631.70

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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.