Home / 13,081.28-18,051.80-7,416.56

Finding the Fourth Proportional to 13,081.28, 18,051.80 and 7,416.56

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Solution

The fourth proportional to 13,081.28, 18,051.80 and 7,416.56 is: 10,234.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.28 : 18,051.80 = 7,416.56 : x
  2. Step 2: Convert to fraction form
    13,081.28/18,051.80 = 7,416.56/x
  3. Step 3: Cross multiply
    13,081.28x = 18,051.80 × 7,416.56
  4. Step 4: Simplify right side
    13,081.28x = 133,882,130.47
  5. Step 5: Solve for x
    x = 133,882,130.47/13,081.28
  6. Step 6: Final answer
    x = 10,234.64

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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.