Home / 13,338.57-18,407.62-7,964.16

Finding the Fourth Proportional to 13,338.57, 18,407.62 and 7,964.16

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Solution

The fourth proportional to 13,338.57, 18,407.62 and 7,964.16 is: 10,990.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.57 : 18,407.62 = 7,964.16 : x
  2. Step 2: Convert to fraction form
    13,338.57/18,407.62 = 7,964.16/x
  3. Step 3: Cross multiply
    13,338.57x = 18,407.62 × 7,964.16
  4. Step 4: Simplify right side
    13,338.57x = 146,601,171.83
  5. Step 5: Solve for x
    x = 146,601,171.83/13,338.57
  6. Step 6: Final answer
    x = 10,990.77

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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.