Home / 12,119.04-16,722.29-6,812.79

Finding the Fourth Proportional to 12,119.04, 16,722.29 and 6,812.79

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Solution

The fourth proportional to 12,119.04, 16,722.29 and 6,812.79 is: 9,400.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.04 : 16,722.29 = 6,812.79 : x
  2. Step 2: Convert to fraction form
    12,119.04/16,722.29 = 6,812.79/x
  3. Step 3: Cross multiply
    12,119.04x = 16,722.29 × 6,812.79
  4. Step 4: Simplify right side
    12,119.04x = 113,925,416.03
  5. Step 5: Solve for x
    x = 113,925,416.03/12,119.04
  6. Step 6: Final answer
    x = 9,400.53

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Half scale
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Double scale
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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.