Home / 12,481.84-17,223.52-7,178.40

Finding the Fourth Proportional to 12,481.84, 17,223.52 and 7,178.40

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Solution

The fourth proportional to 12,481.84, 17,223.52 and 7,178.40 is: 9,905.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.84 : 17,223.52 = 7,178.40 : x
  2. Step 2: Convert to fraction form
    12,481.84/17,223.52 = 7,178.40/x
  3. Step 3: Cross multiply
    12,481.84x = 17,223.52 × 7,178.40
  4. Step 4: Simplify right side
    12,481.84x = 123,637,315.97
  5. Step 5: Solve for x
    x = 123,637,315.97/12,481.84
  6. Step 6: Final answer
    x = 9,905.38

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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.