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Finding the Fourth Proportional to 10,878.69, 15,001.19 and 8,051.99

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Solution

The fourth proportional to 10,878.69, 15,001.19 and 8,051.99 is: 11,103.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.69 : 15,001.19 = 8,051.99 : x
  2. Step 2: Convert to fraction form
    10,878.69/15,001.19 = 8,051.99/x
  3. Step 3: Cross multiply
    10,878.69x = 15,001.19 × 8,051.99
  4. Step 4: Simplify right side
    10,878.69x = 120,789,496.02
  5. Step 5: Solve for x
    x = 120,789,496.02/10,878.69
  6. Step 6: Final answer
    x = 11,103.31

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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.