Home / 13,215.56-18,239.10-7,626.56

Finding the Fourth Proportional to 13,215.56, 18,239.10 and 7,626.56

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Solution

The fourth proportional to 13,215.56, 18,239.10 and 7,626.56 is: 10,525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.56 : 18,239.10 = 7,626.56 : x
  2. Step 2: Convert to fraction form
    13,215.56/18,239.10 = 7,626.56/x
  3. Step 3: Cross multiply
    13,215.56x = 18,239.10 × 7,626.56
  4. Step 4: Simplify right side
    13,215.56x = 139,101,636.09
  5. Step 5: Solve for x
    x = 139,101,636.09/13,215.56
  6. Step 6: Final answer
    x = 10,525.59

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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.