Home / 12,380.47-17,084.74-6,929.46

Finding the Fourth Proportional to 12,380.47, 17,084.74 and 6,929.46

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Solution

The fourth proportional to 12,380.47, 17,084.74 and 6,929.46 is: 9,562.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.47 : 17,084.74 = 6,929.46 : x
  2. Step 2: Convert to fraction form
    12,380.47/17,084.74 = 6,929.46/x
  3. Step 3: Cross multiply
    12,380.47x = 17,084.74 × 6,929.46
  4. Step 4: Simplify right side
    12,380.47x = 118,387,958.84
  5. Step 5: Solve for x
    x = 118,387,958.84/12,380.47
  6. Step 6: Final answer
    x = 9,562.48

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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.