Home / 13,215.09-18,236.69-7,246.75

Finding the Fourth Proportional to 13,215.09, 18,236.69 and 7,246.75

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Solution

The fourth proportional to 13,215.09, 18,236.69 and 7,246.75 is: 10,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.09 : 18,236.69 = 7,246.75 : x
  2. Step 2: Convert to fraction form
    13,215.09/18,236.69 = 7,246.75/x
  3. Step 3: Cross multiply
    13,215.09x = 18,236.69 × 7,246.75
  4. Step 4: Simplify right side
    13,215.09x = 132,156,733.26
  5. Step 5: Solve for x
    x = 132,156,733.26/13,215.09
  6. Step 6: Final answer
    x = 10,000.44

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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.