Home / 13,087.09-18,060.37-7,118.85

Finding the Fourth Proportional to 13,087.09, 18,060.37 and 7,118.85

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Solution

The fourth proportional to 13,087.09, 18,060.37 and 7,118.85 is: 9,824.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.09 : 18,060.37 = 7,118.85 : x
  2. Step 2: Convert to fraction form
    13,087.09/18,060.37 = 7,118.85/x
  3. Step 3: Cross multiply
    13,087.09x = 18,060.37 × 7,118.85
  4. Step 4: Simplify right side
    13,087.09x = 128,569,114.90
  5. Step 5: Solve for x
    x = 128,569,114.90/13,087.09
  6. Step 6: Final answer
    x = 9,824.12

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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.