Home / 11,154.65-15,403.83-7,182.68

Finding the Fourth Proportional to 11,154.65, 15,403.83 and 7,182.68

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Solution

The fourth proportional to 11,154.65, 15,403.83 and 7,182.68 is: 9,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.65 : 15,403.83 = 7,182.68 : x
  2. Step 2: Convert to fraction form
    11,154.65/15,403.83 = 7,182.68/x
  3. Step 3: Cross multiply
    11,154.65x = 15,403.83 × 7,182.68
  4. Step 4: Simplify right side
    11,154.65x = 110,640,781.66
  5. Step 5: Solve for x
    x = 110,640,781.66/11,154.65
  6. Step 6: Final answer
    x = 9,918.80

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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.