Home / 11,215.12-15,476.64-7,025.68

Finding the Fourth Proportional to 11,215.12, 15,476.64 and 7,025.68

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Solution

The fourth proportional to 11,215.12, 15,476.64 and 7,025.68 is: 9,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.12 : 15,476.64 = 7,025.68 : x
  2. Step 2: Convert to fraction form
    11,215.12/15,476.64 = 7,025.68/x
  3. Step 3: Cross multiply
    11,215.12x = 15,476.64 × 7,025.68
  4. Step 4: Simplify right side
    11,215.12x = 108,733,920.12
  5. Step 5: Solve for x
    x = 108,733,920.12/11,215.12
  6. Step 6: Final answer
    x = 9,695.30

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Double scale
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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.