Home / 12,213.12-18,318.02-3,448.74

Finding the Fourth Proportional to 12,213.12, 18,318.02 and 3,448.74

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Solution

The fourth proportional to 12,213.12, 18,318.02 and 3,448.74 is: 5,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.12 : 18,318.02 = 3,448.74 : x
  2. Step 2: Convert to fraction form
    12,213.12/18,318.02 = 3,448.74/x
  3. Step 3: Cross multiply
    12,213.12x = 18,318.02 × 3,448.74
  4. Step 4: Simplify right side
    12,213.12x = 63,174,088.29
  5. Step 5: Solve for x
    x = 63,174,088.29/12,213.12
  6. Step 6: Final answer
    x = 5,172.64

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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.