Home / 13,631.85-18,811.46-7,664.08

Finding the Fourth Proportional to 13,631.85, 18,811.46 and 7,664.08

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Solution

The fourth proportional to 13,631.85, 18,811.46 and 7,664.08 is: 10,576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.85 : 18,811.46 = 7,664.08 : x
  2. Step 2: Convert to fraction form
    13,631.85/18,811.46 = 7,664.08/x
  3. Step 3: Cross multiply
    13,631.85x = 18,811.46 × 7,664.08
  4. Step 4: Simplify right side
    13,631.85x = 144,172,534.36
  5. Step 5: Solve for x
    x = 144,172,534.36/13,631.85
  6. Step 6: Final answer
    x = 10,576.15

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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.