Home / 13,125.88-18,116.94-10,137.16

Finding the Fourth Proportional to 13,125.88, 18,116.94 and 10,137.16

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Solution

The fourth proportional to 13,125.88, 18,116.94 and 10,137.16 is: 13,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.88 : 18,116.94 = 10,137.16 : x
  2. Step 2: Convert to fraction form
    13,125.88/18,116.94 = 10,137.16/x
  3. Step 3: Cross multiply
    13,125.88x = 18,116.94 × 10,137.16
  4. Step 4: Simplify right side
    13,125.88x = 183,654,319.49
  5. Step 5: Solve for x
    x = 183,654,319.49/13,125.88
  6. Step 6: Final answer
    x = 13,991.77

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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.