Home / 11,486.78-15,851.65-6,451.07

Finding the Fourth Proportional to 11,486.78, 15,851.65 and 6,451.07

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Solution

The fourth proportional to 11,486.78, 15,851.65 and 6,451.07 is: 8,902.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.78 : 15,851.65 = 6,451.07 : x
  2. Step 2: Convert to fraction form
    11,486.78/15,851.65 = 6,451.07/x
  3. Step 3: Cross multiply
    11,486.78x = 15,851.65 × 6,451.07
  4. Step 4: Simplify right side
    11,486.78x = 102,260,071.51
  5. Step 5: Solve for x
    x = 102,260,071.51/11,486.78
  6. Step 6: Final answer
    x = 8,902.42

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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.