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Finding the Fourth Proportional to 12,035.51, 18,053.34 and 7,879.01

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Solution

The fourth proportional to 12,035.51, 18,053.34 and 7,879.01 is: 11,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,035.51 : 18,053.34 = 7,879.01 : x
  2. Step 2: Convert to fraction form
    12,035.51/18,053.34 = 7,879.01/x
  3. Step 3: Cross multiply
    12,035.51x = 18,053.34 × 7,879.01
  4. Step 4: Simplify right side
    12,035.51x = 142,242,446.39
  5. Step 5: Solve for x
    x = 142,242,446.39/12,035.51
  6. Step 6: Final answer
    x = 11,818.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.