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Finding the Fourth Proportional to 14,003.80, 21,009.80 and 4,143.32

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Solution

The fourth proportional to 14,003.80, 21,009.80 and 4,143.32 is: 6,216.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.80 : 21,009.80 = 4,143.32 : x
  2. Step 2: Convert to fraction form
    14,003.80/21,009.80 = 4,143.32/x
  3. Step 3: Cross multiply
    14,003.80x = 21,009.80 × 4,143.32
  4. Step 4: Simplify right side
    14,003.80x = 87,050,324.54
  5. Step 5: Solve for x
    x = 87,050,324.54/14,003.80
  6. Step 6: Final answer
    x = 6,216.19

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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.