Home / 13,087.06-18,059.87-7,118.88

Finding the Fourth Proportional to 13,087.06, 18,059.87 and 7,118.88

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Solution

The fourth proportional to 13,087.06, 18,059.87 and 7,118.88 is: 9,823.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.06 : 18,059.87 = 7,118.88 : x
  2. Step 2: Convert to fraction form
    13,087.06/18,059.87 = 7,118.88/x
  3. Step 3: Cross multiply
    13,087.06x = 18,059.87 × 7,118.88
  4. Step 4: Simplify right side
    13,087.06x = 128,566,047.35
  5. Step 5: Solve for x
    x = 128,566,047.35/13,087.06
  6. Step 6: Final answer
    x = 9,823.91

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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.