Home / 12,405.04-17,119.12-6,816

Finding the Fourth Proportional to 12,405.04, 17,119.12 and 6,816

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Solution

The fourth proportional to 12,405.04, 17,119.12 and 6,816 is: 9,406.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.04 : 17,119.12 = 6,816 : x
  2. Step 2: Convert to fraction form
    12,405.04/17,119.12 = 6,816/x
  3. Step 3: Cross multiply
    12,405.04x = 17,119.12 × 6,816
  4. Step 4: Simplify right side
    12,405.04x = 116,683,921.92
  5. Step 5: Solve for x
    x = 116,683,921.92/12,405.04
  6. Step 6: Final answer
    x = 9,406.17

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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.