Home / 14,043.12-21,015.10-13,243.83

Finding the Fourth Proportional to 14,043.12, 21,015.10 and 13,243.83

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Solution

The fourth proportional to 14,043.12, 21,015.10 and 13,243.83 is: 19,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.12 : 21,015.10 = 13,243.83 : x
  2. Step 2: Convert to fraction form
    14,043.12/21,015.10 = 13,243.83/x
  3. Step 3: Cross multiply
    14,043.12x = 21,015.10 × 13,243.83
  4. Step 4: Simplify right side
    14,043.12x = 278,320,411.83
  5. Step 5: Solve for x
    x = 278,320,411.83/14,043.12
  6. Step 6: Final answer
    x = 19,818.99

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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.