Home / 11,154.15-15,403.14-7,182.18

Finding the Fourth Proportional to 11,154.15, 15,403.14 and 7,182.18

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Solution

The fourth proportional to 11,154.15, 15,403.14 and 7,182.18 is: 9,918.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.15 : 15,403.14 = 7,182.18 : x
  2. Step 2: Convert to fraction form
    11,154.15/15,403.14 = 7,182.18/x
  3. Step 3: Cross multiply
    11,154.15x = 15,403.14 × 7,182.18
  4. Step 4: Simplify right side
    11,154.15x = 110,628,124.05
  5. Step 5: Solve for x
    x = 110,628,124.05/11,154.15
  6. Step 6: Final answer
    x = 9,918.11

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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.