Home / 12,206.79-18,310.20-4,807.22

Finding the Fourth Proportional to 12,206.79, 18,310.20 and 4,807.22

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Solution

The fourth proportional to 12,206.79, 18,310.20 and 4,807.22 is: 7,210.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.79 : 18,310.20 = 4,807.22 : x
  2. Step 2: Convert to fraction form
    12,206.79/18,310.20 = 4,807.22/x
  3. Step 3: Cross multiply
    12,206.79x = 18,310.20 × 4,807.22
  4. Step 4: Simplify right side
    12,206.79x = 88,021,068.09
  5. Step 5: Solve for x
    x = 88,021,068.09/12,206.79
  6. Step 6: Final answer
    x = 7,210.83

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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.