Home / 13,222.08-18,239.52-10,072.80

Finding the Fourth Proportional to 13,222.08, 18,239.52 and 10,072.80

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Solution

The fourth proportional to 13,222.08, 18,239.52 and 10,072.80 is: 13,895.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.08 : 18,239.52 = 10,072.80 : x
  2. Step 2: Convert to fraction form
    13,222.08/18,239.52 = 10,072.80/x
  3. Step 3: Cross multiply
    13,222.08x = 18,239.52 × 10,072.80
  4. Step 4: Simplify right side
    13,222.08x = 183,723,037.06
  5. Step 5: Solve for x
    x = 183,723,037.06/13,222.08
  6. Step 6: Final answer
    x = 13,895.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.