Home / 13,754.34-18,979.74-7,704.45

Finding the Fourth Proportional to 13,754.34, 18,979.74 and 7,704.45

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Solution

The fourth proportional to 13,754.34, 18,979.74 and 7,704.45 is: 10,631.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.34 : 18,979.74 = 7,704.45 : x
  2. Step 2: Convert to fraction form
    13,754.34/18,979.74 = 7,704.45/x
  3. Step 3: Cross multiply
    13,754.34x = 18,979.74 × 7,704.45
  4. Step 4: Simplify right side
    13,754.34x = 146,228,457.84
  5. Step 5: Solve for x
    x = 146,228,457.84/13,754.34
  6. Step 6: Final answer
    x = 10,631.44

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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.