Home / 11,211.69-15,478.02-7,645.44

Finding the Fourth Proportional to 11,211.69, 15,478.02 and 7,645.44

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Solution

The fourth proportional to 11,211.69, 15,478.02 and 7,645.44 is: 10,554.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.69 : 15,478.02 = 7,645.44 : x
  2. Step 2: Convert to fraction form
    11,211.69/15,478.02 = 7,645.44/x
  3. Step 3: Cross multiply
    11,211.69x = 15,478.02 × 7,645.44
  4. Step 4: Simplify right side
    11,211.69x = 118,336,273.23
  5. Step 5: Solve for x
    x = 118,336,273.23/11,211.69
  6. Step 6: Final answer
    x = 10,554.72

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Half scale
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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.