Home / 13,527.36-18,665.76-7,940.16

Finding the Fourth Proportional to 13,527.36, 18,665.76 and 7,940.16

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Solution

The fourth proportional to 13,527.36, 18,665.76 and 7,940.16 is: 10,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.36 : 18,665.76 = 7,940.16 : x
  2. Step 2: Convert to fraction form
    13,527.36/18,665.76 = 7,940.16/x
  3. Step 3: Cross multiply
    13,527.36x = 18,665.76 × 7,940.16
  4. Step 4: Simplify right side
    13,527.36x = 148,209,120.92
  5. Step 5: Solve for x
    x = 148,209,120.92/13,527.36
  6. Step 6: Final answer
    x = 10,956.25

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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.