Home / 12,813.12-17,684.52-7,224.12

Finding the Fourth Proportional to 12,813.12, 17,684.52 and 7,224.12

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Solution

The fourth proportional to 12,813.12, 17,684.52 and 7,224.12 is: 9,970.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.12 : 17,684.52 = 7,224.12 : x
  2. Step 2: Convert to fraction form
    12,813.12/17,684.52 = 7,224.12/x
  3. Step 3: Cross multiply
    12,813.12x = 17,684.52 × 7,224.12
  4. Step 4: Simplify right side
    12,813.12x = 127,755,094.62
  5. Step 5: Solve for x
    x = 127,755,094.62/12,813.12
  6. Step 6: Final answer
    x = 9,970.65

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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.