Home / 9,309.04-13,972.66-6,939.78

Finding the Fourth Proportional to 9,309.04, 13,972.66 and 6,939.78

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Solution

The fourth proportional to 9,309.04, 13,972.66 and 6,939.78 is: 10,416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,309.04 : 13,972.66 = 6,939.78 : x
  2. Step 2: Convert to fraction form
    9,309.04/13,972.66 = 6,939.78/x
  3. Step 3: Cross multiply
    9,309.04x = 13,972.66 × 6,939.78
  4. Step 4: Simplify right side
    9,309.04x = 96,967,186.41
  5. Step 5: Solve for x
    x = 96,967,186.41/9,309.04
  6. Step 6: Final answer
    x = 10,416.45

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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.