Home / 13,630.43-18,810.17-7,661.75

Finding the Fourth Proportional to 13,630.43, 18,810.17 and 7,661.75

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Solution

The fourth proportional to 13,630.43, 18,810.17 and 7,661.75 is: 10,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.43 : 18,810.17 = 7,661.75 : x
  2. Step 2: Convert to fraction form
    13,630.43/18,810.17 = 7,661.75/x
  3. Step 3: Cross multiply
    13,630.43x = 18,810.17 × 7,661.75
  4. Step 4: Simplify right side
    13,630.43x = 144,118,687.64
  5. Step 5: Solve for x
    x = 144,118,687.64/13,630.43
  6. Step 6: Final answer
    x = 10,573.31

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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.