Home / 11,318.48-15,620.04-7,012.64

Finding the Fourth Proportional to 11,318.48, 15,620.04 and 7,012.64

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Solution

The fourth proportional to 11,318.48, 15,620.04 and 7,012.64 is: 9,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.48 : 15,620.04 = 7,012.64 : x
  2. Step 2: Convert to fraction form
    11,318.48/15,620.04 = 7,012.64/x
  3. Step 3: Cross multiply
    11,318.48x = 15,620.04 × 7,012.64
  4. Step 4: Simplify right side
    11,318.48x = 109,537,717.31
  5. Step 5: Solve for x
    x = 109,537,717.31/11,318.48
  6. Step 6: Final answer
    x = 9,677.78

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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.