Home / 13,998.30-21,040.65-13,739.10

Finding the Fourth Proportional to 13,998.30, 21,040.65 and 13,739.10

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Solution

The fourth proportional to 13,998.30, 21,040.65 and 13,739.10 is: 20,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,998.30 : 21,040.65 = 13,739.10 : x
  2. Step 2: Convert to fraction form
    13,998.30/21,040.65 = 13,739.10/x
  3. Step 3: Cross multiply
    13,998.30x = 21,040.65 × 13,739.10
  4. Step 4: Simplify right side
    13,998.30x = 289,079,594.42
  5. Step 5: Solve for x
    x = 289,079,594.42/13,998.30
  6. Step 6: Final answer
    x = 20,651.05

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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.